Providers - X - API Evangelist Providers

X

X (formerly Twitter) operates the X Developer Platform, the programmable interface to the public conversation on X. The X API v2 is a 190-operation REST surf...

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X (Twitter)

X (formerly Twitter) is a social media platform providing APIs for accessing and integrating with posts, users, spaces, direct messages, lists, media, trends...

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X mart

X mart is a 500 Global portfolio company whose website, dentacarts.com, operates DentaCarts, an online dental supplies marketplace positioned as a "Dentist S...

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X Zell

X-ZELL is a Thailand-based medical technology company (Y Combinator W15) building a multiplex cytopathology product ecosystem that combines cryofixation, imm...

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X-energy

X-energy is an advanced nuclear reactor and fuel company headquartered in Rockville, Maryland, founded in 2009 by Dr. Kam Ghaffarian. The company's flagship ...

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x-tention

x-tention Informationstechnologie GmbH is an Austrian healthcare IT company headquartered in Wels, Upper Austria, that builds, integrates and operates inform...

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X1

X1 was a San Francisco fintech behind the X1 Card, a smart Visa credit card that set limits based on income rather than credit score, backed by Craft Venture...

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X2Y2

X2Y2 is an NFT marketplace and trading platform on Ethereum offering REST APIs for querying listings, offers, sales history, collection statistics, and execu...

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x402 List API

An open, machine-readable, live-monitored directory of services that accept x402 protocol payments (HTTP 402 Payment Required). Self-described as agent-first...

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XAG

XAG (Guangzhou, China) is an agricultural technology company building autonomous farming solutions: agricultural drones (P150 Max, P150, P100 Pro, P60), R100...

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xAI

xAI is an AI research lab founded by Elon Musk. The xAI API exposes Grok foundation models for chat, function calling, vision, voice, image generation, and v...

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Xaira

Xaira Therapeutics is a South San Francisco-based biotechnology company building the transformative artificial intelligence that discovers and develops the n...

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Xaira Therapeutics

Xaira Therapeutics is a company surfaced as a portfolio company of menlo-ventures and added to the API Evangelist network as a stub for enrichment. This prof...

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Xairos

Xairos Systems is a Techstars-backed company building quantum time transfer (QTT) technology - a space-based, quantum-resilient global timing and synchroniza...

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Xalts

Xalts (operated by Tokuten Pte Ltd) is an Accel-backed fintech building an AI agent platform for corporate treasury and finance teams — a copilot that automa...

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Xamarin

Xamarin was the San Francisco company behind the Mono-based cross-platform mobile development framework, letting developers build native iOS, Android, and Ma...

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Xanadu

Xanadu is a Toronto-based photonic quantum computing company building cloud-accessible continuous- variable quantum processors based on squeezed states of li...

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Xanadu

Xanadu is a Canadian photonic quantum computing company building room-temperature, fault-tolerant, scalable quantum computers based on photonic continuous-va...

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Xano

Xano is a no-code backend / backend-as-a-service that lets users visually build production REST APIs backed by a managed PostgreSQL database and serverless f...

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Xapo

Xapo Bank is a members-only private bank and Bitcoin custodian founded in 2013, combining regulated fiat banking with institutional-grade Bitcoin custody in ...

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Xata

Xata is a serverless Postgres platform designed for modern development and agentic workloads, offering instant database branching with copy-on-write storage ...

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Xayn (now Noxtua)

Xayn is a Berlin-based AI company founded in 2017 as XAIN out of research by Dr. Leif-Nissen Lundbaek and Prof. Michael Huth at Oxford and Imperial College L...

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xbonline

xbonline is a company surfaced as a portfolio company of qiming and added to the API Evangelist network as a stub for enrichment. This profile is a lead awai...

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Xbow

XBOW is an autonomous offensive security platform that uses AI to perform penetration testing with real exploit validation — it identifies vulnerabilities, c...

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XBuild

XBuild is a company surfaced as a portfolio company of a16z and added to the API Evangelist network as a stub for enrichment. This profile is a lead awaiting...

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Xcel Energy

Xcel Energy is a major U.S. electricity and natural gas utility holding company headquartered in Minneapolis, Minnesota, providing service to approximately 3...

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Xceptor

Xceptor is a data automation platform that helps organizations extract, transform, and integrate data from various sources, particularly focused on document ...

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xChange

Container xChange is a Hamburg-founded B2B online marketplace and operating platform for shipping containers, where container owners, users, traders, and les...

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xchange (Formerly Exchange Applications Inc.)

Xchange Inc., formerly Exchange Applications Inc., was a Boston-based (89 South Street, Boston, MA) customer relationship marketing software company that hel...

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xColors

Generate & convert colors

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XCOM

XCOM (XCOM Technologies Inc.) was a competitive local exchange carrier (CLEC) based in Cambridge, Massachusetts, backed by Battery Ventures and Matrix Partne...

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Xealth

Xealth is a company surfaced as a portfolio company of threshold-ventures and added to the API Evangelist network as a stub for enrichment. Sector: healthcar...

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XebiaLabs

XebiaLabs was an enterprise DevOps software company behind XL Deploy (deployment automation), XL Release (release orchestration), and XL Impact (DevOps analy...

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XEL

XEL is a company surfaced as a portfolio company of battery-ventures and added to the API Evangelist network as a stub for enrichment. This profile is a lead...

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Xelix

Xelix is a London-based company (with a US office in Wilmington, DE) providing an AI-powered Accounts Payable control platform that bolts onto existing ERP, ...

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XellSmart Biomedical

XellSmart Biomedical (士泽生物医药) is a clinical-stage biotechnology company based in Suzhou and Shanghai, China, founded in 2021 by Dr. Xiang Li. The company dev...

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Xelta - Create Images, Videos & More with Generative AI

Xelta AI Studio is a credit-based generative-AI creative platform from Xelta Pvt Ltd, unifying 90+ third-party models (FAL, BytePlus, OpenAI, Google, Hugging...

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XELUS

Xelus was a service parts planning and optimization software company founded in 1972 and headquartered in Fairport, New York, providing inventory management ...

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Xembly

Xembly was a Seattle-based enterprise AI company (2020-2024) whose assistant, Xena, acted as an automated "chief of staff" for knowledge workers - scheduling...

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Xendit

Xendit is a payments infrastructure provider for Southeast Asia, giving businesses in Indonesia, the Philippines, and the wider region a single REST API to a...

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Xeneta

Xeneta is an ocean and air freight rate benchmarking and market analytics platform headquartered in Oslo, Norway. It crowdsources contracted freight rates fr...

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Xenex Disinfection Services

Xenex Disinfection Services is a San Antonio, Texas-based medical technology company founded in 2008 by Johns Hopkins-trained epidemiologists Dr. Mark Stibic...

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xeno-canto

Bird recordings

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Xentral

Xentral is a cloud ERP and business operations platform from Augsburg, Germany that helps small and mid-sized product businesses run sales orders, purchasing...

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Xepelin

Xepelin is a Chilean-founded fintech operating in Chile and Mexico that provides digital financial services for small and mid-sized businesses, including inv...

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Xero

Xero is a cloud-based accounting software platform that helps small and medium-sized businesses manage their finances. Xero provides a comprehensive develope...

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Xero Accounting

Xero is a cloud accounting platform for small businesses, accountants, and bookkeepers that provides invoicing, bank reconciliation, payroll, expense managem...

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Xerox

Xerox is a global technology company and document management leader providing printing, digital document management, and business process solutions. Xerox of...

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Xfactor.io

Xfactor.io is an AI-powered revenue operations platform founded by Mike Carpenter and backed by Accel and Lightspeed Venture Partners. Its Growth AI engine, ...

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xFarm Technologies

xFarm Technologies is a company surfaced as a portfolio company of partech and added to the API Evangelist network as a stub for enrichment. Sector: Food & A...

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Xfers

Xfers is a Southeast Asian payments infrastructure company founded in Singapore in 2015 and backed by 500 Global, providing bank-transfer collection, payouts...

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Xflow

Xflow is a cross-border payments platform for Indian businesses, freelancers, and exporters, enabling them to receive international payments through local co...

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XFuel

XFuel develops, patents, and deploys technologies that transform diverse waste into low-carbon drop-in transport fuels, using its Chemical Liquid Refining (C...

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Xh

xh is a friendly and fast command-line HTTP client written in Rust, designed as a modern, high-performance alternative to HTTPie. It reimplements HTTPie's re...

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Xiao-Y Technology (小y科技)

Xiao-Y Technology (小y科技), operated by Beijing Shiyou Interactive Technology Co., Ltd. (北京视游互动科技有限公司), is a Chinese smart-TV and big-screen gaming platform be...

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Xiaoe (小鹅通)

Xiaoe (小鹅通), operated by Shenzhen Xiaoe Network Technology Co., Ltd., is a Chinese private-domain (私域) marketing and content-commerce SaaS platform that help...

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Xiaoe-tech

Xiaoe-tech is a company surfaced as a portfolio company of idg-capital and added to the API Evangelist network as a stub for enrichment. Sector: consumer-tec...

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Xiaoman (OKKI)

Xiaoman Technology (小满科技, OKKI) is an AI-powered foreign-trade sales platform under Alibaba International Station, serving Chinese B2B exporters with the OKK...

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Xiaomi

Xiaomi is a multinational technology company headquartered in Beijing, China, that designs, develops, and sells a wide range of consumer electronics and rela...

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Xiaomishu (订餐小秘书)

Xiaomishu (订餐小秘书, "Dining Little Secretary") is a Shanghai-based restaurant reservation and dining-marketing technology company operating since 2005 via xiao...

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xiaoniaokuaiyan

Xiaoniaokuaiyan (小鸟快验) is an in-home health-checkup and blood-testing service brand operated by Beijing Cloud Artery Health Management Co., Ltd (北京云动脉健康管理有限公...

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Xiaopangxiong

Xiaopangxiong (小胖熊, "small fat bear") is a Chinese B2B e-commerce platform for home and office renovation materials, operated by Shanghai Miju Network Techno...

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xiaoyi

Xiaoyi Technology (小蚁科技), operated by Shanghai Yunyi Zhilian Technology (上海云蚁智联) and best known for its YI-brand cameras, is a Shanghai-based smart-imaging c...

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Xignite

Xignite pioneered cloud-based financial market data APIs, offering a catalog of 40+ REST web services covering equities, forex, crypto, indices, options, fut...

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Xilinx

Xilinx was an American technology company that developed programmable logic devices and the associated software before being acquired by AMD.

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Xilis

Xilis is a life-sciences / precision-oncology company developing patient-derived MicroOrganoSphere (MOS) technology to model a patient's tumor outside the bo...

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Ximian

Ximian was a Boston-based open source software company founded on October 19, 1999 by Miguel de Icaza and Nat Friedman -- originally incorporated as Internat...

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Ximilar

Ximilar is a Czech visual-AI company that sells computer vision as a REST API and a no-code platform. Its api.ximilar.com surface covers image recognition an...

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XING Mobility

XING Mobility (行競科技) is a Taiwan-based battery technology company building immersion-cooled lithium battery systems under the IMMERSIO brand, including cell-...

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Xinhe Technology

Xinhe Technology (Shanghai Xinhe Box Technology Co., Ltd. / 上海心盒科技有限公司) operates 心愿盒 Match Box, a consumer experience co-creation platform. Brands distribute...

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Xirrus

Xirrus was an enterprise Wi-Fi company that made high-density wireless access points and arrays managed through the Xirrus Management System (XMS), which exp...

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Xiudan (Showball)

Shenzhen Xiudan Technology Co., Ltd. (深圳秀蛋科技有限公司) is the Chinese company behind Showball (秀蛋), a virtual social "meta" mobile app where users create avatars ...

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xkcd

Retrieve xkcd comics as JSON

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xLight

xLight is a company surfaced as a portfolio company of playground-global and added to the API Evangelist network as a stub for enrichment. Sector: compute. T...

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xMath

Random mathematical expressions

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xMatters

xMatters is a service reliability platform that orchestrates intelligent communication, on-call management, and incident response workflows for IT operations...

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XML

XML (Extensible Markup Language) is a W3C standard markup language and data format that defines rules for encoding documents in a way that is both human-read...

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XMOV

XMOV is a company surfaced as a portfolio company of softbank-vision-fund and added to the API Evangelist network as a stub for enrichment. Sector: enterpris...

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XMTP

XMTP (Extensible Message Transport Protocol) is a decentralized, open messaging protocol that enables end-to-end encrypted communication between Ethereum wal...

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Xona Space Systems

Xona Space Systems builds Pulsar, a commercial low-Earth-orbit (LEO) positioning, navigation, and timing (PNT) satellite service designed to complement and h...

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Xoom

Xoom is PayPal's international money transfer (remittance) service, operating since 2001. Consumers use Xoom to send money to bank accounts, debit cards, mob...

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Xoserve

Xoserve Limited is the Central Data Services Provider (CDSP) for Great Britain's gas market — funded, governed and owned by the gas industry itself. From Sol...

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Xoxoday

Xoxoday is an AI-powered enterprise platform for rewards, loyalty, and incentive operations. Its Plum Rewards API enables organizations to programmatically d...

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XP Health

XP Health is an AI-powered vision benefits platform that modernizes employer vision programs with full-replacement and dual-option plans designed to reduce e...

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Xpedeon

Xpedeon is a construction-specific ERP platform from Algorithms Software Pvt Ltd (30+ years in construction software), serving general contractors, specialis...

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Xpeng

XPENG (Xiaopeng Motors) is a Chinese smart electric-vehicle company headquartered in Guangzhou that designs and manufactures smart EVs (G6, G7, G9, P7/P7+, X...

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Xperi

Xperi Inc. (NYSE: XPER) is an entertainment technology company whose licensed technologies power audio, video, and media discovery experiences across connect...

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Xpertsea

Xpertsea is an aquaculture technology company (backed by QED Investors) that has rebranded its product as Kampi (bekampi.com) — an AI-powered shrimp-farming ...

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Xplenty (Xenon)

Xplenty (Xenon) is a company surfaced as a portfolio company of bain-capital-ventures and added to the API Evangelist network as a stub for enrichment. Secto...

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XPO

XPO, Inc. (NYSE: XPO) is a Fortune 500 transportation company and one of the largest providers of less-than-truckload (LTL) freight transportation in North A...

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XPO Logistics

XPO Logistics, Inc. is a leading provider of less-than-truckload (LTL) transportation in North America. The company offers freight transportation through a p...

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Xpressbees

Xpressbees is a company surfaced as a portfolio company of norwest-venture-partners and added to the API Evangelist network as a stub for enrichment. Sector:...

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Xquik

Xquik is an independent third-party X data and automation platform. It provides public data reads, connected-account write actions, monitoring, signed webhoo...

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xRocket Exchange API

Telegram-native centralized crypto exchange (CEX) developer program exposing a REST Exchange API for trading and market data (with a WebSocket stream) and a ...

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XRP Ledger

The XRP Ledger (XRPL) is a decentralized, public blockchain with fast settlement and low transaction costs. It provides HTTP/WebSocket JSON-RPC APIs for quer...

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Xscape Photonics

Xscape Photonics is a company surfaced as a portfolio company of addition and added to the API Evangelist network as a stub for enrichment. Sector: ai-infras...

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Xsight Labs

Xsight Labs is a fabless semiconductor company redefining AI and cloud connectivity with end-to-end, software-defined silicon for hyperscale data centers. It...

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XSKY

XSKY (XSKY Data Technology, 星辰天合) is a Beijing-based software-defined storage vendor serving nearly 2,000 large government and enterprise institutions, ranke...

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XSLT

XSLT (Extensible Stylesheet Language Transformations) is a W3C standard language for transforming XML documents into other formats such as HTML, plain text, ...

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XSquare

XSquare (listed as XSquire in the 500 Global portfolio) is a Dubai-based B2B financial operations platform for the GCC, live across the UAE and Qatar. It uni...

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Xtalic

Xtalic Corporation is a materials technology company founded in 2005 out of MIT by professor Chris Schuh and Dr. Alan Lund, headquartered in Marlborough, Mas...

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XtalPi

XtalPi is an AI-and-quantum-physics drug discovery and materials research platform company with headquarters in Cambridge, Massachusetts and major operations...

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XtGem

XtGem is a visual mobile website builder operated by UAB XtGem of Vilnius, Lithuania, letting anyone build and host mobile sites on *.xtgem.com subdomains (1...

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Xtime

Xtime is Cox Automotive's service experience platform for franchised auto dealerships, combining online appointment scheduling, service-lane check-in, multi-...

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xTool

xTool is a Shenzhen-based digital-fabrication brand, spun out of Makeblock and backed by HongShan, making CO2, fiber, and diode laser cutters and engravers, ...

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Xtract

Xtract was a social-intelligence analytics company (xtract.fi / xtract.com) that refined social interaction, behaviour, and demographic data from telecom ope...

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XtremIO

XtremIO was an Israeli all-flash enterprise storage company founded in 2009 and acquired by EMC in May 2012 for $430 million, with the technology continuing ...

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Xtype

xtype is an automated governance platform for ServiceNow, giving enterprises visibility, control, orchestration, and compliance across every instance in thei...

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Xurity

Xurity, Ltd. is a former Battery Ventures portfolio company, listed as an exited investment on Battery's all-companies roster (Q1 2026). As of July 2026 the ...

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Xweather

Xweather, a Vaisala company, provides weather data APIs delivering science-backed, hyper-local weather intelligence for operational applications. The Xweathe...

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Xwork

Xwork is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This profile is a lead awa...

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Xylem

Xylem is a leading global water technology company committed to developing innovative technology solutions to the world's water challenges across the full wa...

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Discovery

Learnings

Guidance

Toolbox

Alignment

API Evangelist LLC

Providers - X

X

X (Twitter)

X mart

X Zell

X-energy

x-tention

X1

X2Y2

x402 List API

XAG

xAI

Xaira

Xaira Therapeutics

Xairos

Xalts

Xamarin

Xanadu

Xanadu

Xano

Xapo

Xata

Xayn (now Noxtua)

xbonline

Xbow

XBuild

Xcel Energy

Xceptor

xChange

xchange (Formerly Exchange Applications Inc.)

xColors

XCOM

Xealth

XebiaLabs

XEL

Xelix

XellSmart Biomedical

Xelta - Create Images, Videos & More with Generative AI

XELUS

Xembly

Xendit

Xeneta

Xenex Disinfection Services

xeno-canto

Xentral

Xepelin

Xero

Xero Accounting

Xerox

Xfactor.io

xFarm Technologies

Xfers

Xflow

XFuel

Xh

Xiao-Y Technology (小y科技)

Xiaoe (小鹅通)

Xiaoe-tech

Xiaoman (OKKI)

Xiaomi

Xiaomishu (订餐小秘书)

xiaoniaokuaiyan

Xiaopangxiong

xiaoyi

Xignite

Xilinx

Xilis

Ximian

Ximilar

XING Mobility

Xinhe Technology

Xirrus

Xiudan (Showball)

xkcd