All Developer Tools

Featureform — AI API / SDK for Developers tool for developers. Specializes in Feature Store.

FeatureHub — CI/CD for Applications tool for developers. Specializes in Feature Flags.

FeatureProbe — CI/CD for Applications tool for developers. Specializes in Feature Flags.

Featurespace — ARIC risk engine using adaptive behavioral analytics to detect fraud and financial crime in real-time transaction streams.

Featurevisor — Git-based feature flag system for managing flags as code with CI/CD integration.

Feedzai — ML-powered financial risk platform detecting payment fraud, money laundering, and account takeover in real time.

ByteDance Feishus API platform for building chatbots, custom apps and integrations for the Feishu (Lark) suite.

Felt — Collaborative map-making tool with real-time editing, data import, and embeddable web maps.

Fennel AI — AI API / SDK for Developers tool for developers. Specializes in Feature Engineering.

Fermyon — Backend-as-a-Service tool for developers. Specializes in WebAssembly Platform.

Fermyon Spin — CI/CD for Applications tool for developers. Specializes in WebAssembly Serverless.

Fermyon Technologies — CI/CD for Applications tool for developers. Specializes in WebAssembly Cloud.

Fern — SDK and documentation generator from OpenAPI specs, producing idiomatic client libraries in multiple languages.

Fern Docs — CI/CD for Applications tool for developers. Specializes in API Documentation.

Ferndesk — CI/CD for Applications tool for developers. Specializes in Documentation.

FerretDB — DBaaS / Serverless Databases tool for developers. Specializes in MongoDB Alternative.

Library for mocking calls to fetch in Node.js and browsers, supporting complex matchers, named routes and global/sandbox modes.

Open-source Java feature toggle library with string-based flag names, 20+ database backends, audit trail and Spring Boot starter with web console and REST API.

FGA (Fine-Grained Authorization) — CI/CD for Applications tool for developers. Specializes in Authorization Service.

Fiber — CI/CD for Applications tool for developers. Specializes in Web Framework.

Fiberplane — Test Automation / Device Cloud tool for developers. Specializes in API Debugging.

FICO Falcon Fraud Manager is one of the most widely deployed payment fraud detection systems worldwide, scoring card and account transactions using consortium data and neural models. It exposes streaming APIs and SDKs for banks and processo

Fiddler AI — AI API / SDK for Developers tool for developers. Specializes in ML Monitoring.

Fig — Code Assistants / Agent Tooling tool for developers. Specializes in terminal autocomplete.

Figma — No-code / Low-code App Builders tool for developers. Specializes in Design Platform.

Figma Tokens — No-code / Low-code App Builders tool for developers. Specializes in Design System.

All-in-one CRO platform with A/B testing, heatmaps, session recordings and polls/surveys aimed at SMB ecommerce.

Figstack — Code Assistants / Agent Tooling tool for developers. Specializes in AI Code Understanding.

Filebase — CI/CD for Applications tool for developers. Specializes in Object Storage.

Filebeat — CI/CD for Applications tool for developers. Specializes in Log Management.

Filestack — File upload and transformation API with CDN delivery, document conversion, and virus scanning.

Final Form — CI/CD for Applications tool for developers. Specializes in Form Management.

Indonesian open finance platform focused on credit scoring and alternative financial data sharing APIs.

Modular credit decisioning APIs with bank statement parsing, alt credit scoring and underwriting for Indian lenders.

Finch — CI/CD for Applications tool for developers. Specializes in Integration Platform.

African cross-border payment infrastructure API supporting virtual accounts in NGN/GBP/EUR and 150+ country coverage.

Fine — Code Assistants / Agent Tooling tool for developers. Specializes in AI Dev Agent.

Fine Dev — CI/CD for Applications tool for developers. Specializes in AI Agent Builder.

FingerprintJS (Fingerprint Pro) provides browser and mobile device identification with 99.5% accuracy using advanced fingerprinting signals. Its API detects bots, account sharing, multi-accounting and payment fraud, and exposes risk signals

Finicity — Mastercard open banking platform providing bank-verified account data for income, employment, and identity verification.

FiniteState — Security Scanning / Mobile App Sec tool for developers. Specializes in Firmware Security/SBOM.

Finix — US payments infrastructure API enabling SaaS platforms to become payment facilitators with card processing and payouts.

Finout — Observability / Logging / Tracing tool for developers. Specializes in Cloud Cost Management.

Chilean open banking API enabling account data access and payment initiation for fintechs in Chile and Mexico.

Firebase — Google's BaaS platform providing Firestore, Realtime Database, Auth, Cloud Functions, and Hosting.

Firebase Crashlytics — CI/CD for Applications tool for developers. Specializes in Crash Reporting.

Firebolt — CI/CD for Applications tool for developers. Specializes in Cloud Analytics Database.

Firecamp — Developer Portals / API Management tool for developers. Specializes in API Platform.

Firecrawl — Data Integration / ETL / Reverse ETL tool for developers. Specializes in Data Extraction.

Fireflies AI — AI API / SDK for Developers tool for developers. Specializes in Meeting AI.

Firefly — CI/CD for Applications tool for developers. Specializes in Infrastructure as Code.

FireHydrant — Observability / Logging / Tracing tool for developers. Specializes in Incident Management.

FHIR-native data platform built on .NET Core for processing health data and enhancing interoperability, with the widely-used open-source Firely .NET SDK.

Firetail — Security Scanning / Mobile App Sec tool for developers. Specializes in API Security.

Fireworks AI — Fast LLM inference API with compound AI system support and OpenAI-compatible endpoint.

FIS — Global financial technology company providing payment processing, banking software, and acquiring for enterprises and FIs.

Fiserv — US-based financial services technology company offering Clover POS, payment processing, and merchant acquiring globally.

Open-source Unity multiplayer networking solution built for performance. Offers client-hosted and dedicated server support with prediction, lag compensation, and observer patterns.

FishAudio — AI API / SDK for Developers tool for developers. Specializes in Voice AI.

Fission — CI/CD for Applications tool for developers. Specializes in Serverless on Kubernetes.

Fivetran — Fully managed ELT platform with 300+ automated connectors handling schema drift and data normalization.

Fixie AI — AI API / SDK for Developers tool for developers. Specializes in AI Agent Platform.

Fixit — CI/CD for Applications tool for developers. Specializes in Code Linter.

Feature flag daemon with a Unix philosophy. Reference OpenFeature-compliant backend supporting HTTP/gRPC evaluation, targeting rules and OpenTelemetry tracing.

Flagger — CI/CD for Applications tool for developers. Specializes in Progressive Delivery.

Flagr — Feature Flags / Remote Config tool for developers. Specializes in Feature Flags.

Flagright is an API-first platform for transaction monitoring, fraud prevention, customer risk assessment and sanctions screening with no-code rule building. It is aimed at neobanks, payment companies and crypto businesses looking for fast

Free open-source Vercel library for Next.js and SvelteKit feature flags. Framework-native, provider-agnostic with adapters for LaunchDarkly, Statsig, Optimizely, Hypertune, ConfigCat, DevCycle and Flipt.

Flagship.io — Feature flag and A/B testing platform with targeting rules, rollout strategies, and multi-language SDKs.

Flagsmith — OSS feature flag and remote configuration service with user targeting, environments, and analytics.

Flair — AI API / SDK for Developers tool for developers. Specializes in NLP.

Flake8 — CI/CD for Applications tool for developers. Specializes in Style Checker.

FLAML — AI API / SDK for Developers tool for developers. Specializes in AutoML.

Flannel — CI/CD for Applications tool for developers. Specializes in Container Networking.

Flare — CI/CD for Applications tool for developers. Specializes in Error Tracking.

Open-source cloud-native monitoring platform with alerting, dashboards and on-call based on Nightingale and Categraf.

Flask — CI/CD for Applications tool for developers. Specializes in Web Framework.

Flask-SocketIO — CI/CD for Applications tool for developers. Specializes in WebSocket.

Flatcar Linux — CI/CD for Applications tool for developers. Specializes in Container Optimized OS.

Flatfile — Data Integration / ETL / Reverse ETL tool for developers. Specializes in Data Import.

Central repository for Flatpak applications — the primary distribution hub for sandboxed Linux desktop apps.

Flatlogic — CI/CD for Applications tool for developers. Specializes in CRUD App Generator.

Next-generation technology for building and distributing sandboxed desktop applications on Linux.

Flax — AI API / SDK for Developers tool for developers. Specializes in ML Framework.

Fleek — CI/CD for Applications tool for developers. Specializes in Static Hosting.

Flet — CI/CD for Applications tool for developers. Specializes in GUI Framework.

Flexera — Observability / Logging / Tracing tool for developers. Specializes in Cloud Cost Management.

Flexpa — FHIR-based health insurance API for retrieving member claims and coverage data under CMS interoperability rules.

AI-powered invisible recovery engine for failed subscription payments with smart retry scheduling.

Flexprice — CI/CD for Applications tool for developers. Specializes in Usage Billing.

Flightcontrol — CI/CD for Applications tool for developers. Specializes in Cloud Deployment Platform.

Fliki — AI video and voiceover creation tool that converts blog posts and scripts into narrated videos.

OpenTelemetry-compatible observability platform focusing on cost-efficient telemetry pipelines and on-prem deployments.

Flipper — Release / App Store Operations tool for developers. Specializes in Feature Flags.

Flipsite — CI/CD for Applications tool for developers. Specializes in Static Hosting.

Flipt — OSS self-hosted feature flag management platform with gRPC and REST API and multi-environment support.

FlixBus/FlixTrain engineering arm; partner APIs for bus/train inventory & ticketing.

Floating UI — CI/CD for Applications tool for developers. Specializes in Floating Elements.

Flood — Test Automation / Device Cloud tool for developers. Specializes in Load Testing.

Tunisian digital banking and financial super-app for francophone Africa with account and payment APIs.

Chilean payment gateway with developer API supporting Webpay, local banks, and subscriptions for Chilean merchants.

Flowable — open-source BPMN, CMMN, and DMN workflow engine with Java runtime. Enterprise edition adds low-code modeler and cloud deployment.

Flowbite — No-code / Low-code App Builders tool for developers. Specializes in UI Component Library.

Flower — CI/CD for Applications tool for developers. Specializes in Task Monitoring.

Flowframes — AI API / SDK for Developers tool for developers. Specializes in AI Video Enhancement.

FlowFuse (formerly FlowForge) — Node-RED based DevOps platform for industrial and IoT automation. Managed hosting, SSO, and team collaboration.

Flowgear — iPaaS for connecting SaaS, on-prem databases, ERPs, and APIs. Visual designer with reusable connector patterns and on-prem agents.

FlowGPT — AI API / SDK for Developers tool for developers. Specializes in Prompt Marketplace.

Flowise — CI/CD for Applications tool for developers. Specializes in LLM Platform.

Flowlu — CI/CD for Applications tool for developers. Specializes in Workflow Automation.

Flowroute — Programmable voice and SMS API built on Tier 1 carrier infrastructure with a developer portal.

Flows — no-code workflow builder with AI-native node types. Connects ChatGPT, Claude, Anthropic APIs, and SaaS tools visually.

Developer environment manager built on Nix providing reproducible, shareable dev environments as code. Lets monorepo teams pin exact toolchain versions without deep Nix expertise.

Extensive set of extension methods for .NET testing that allow more natural assertions such as result.Should().BeEquivalentTo(expected).

Fluent Bit — CI/CD for Applications tool for developers. Specializes in Log Processor.

Fluentd — Observability / Logging / Tracing tool for developers. Specializes in Log Management.

FluidStack — AI API / SDK for Developers tool for developers. Specializes in GPU Cloud.

Flutter — Release / App Store Operations tool for developers. Specializes in Cross Platform Framework.

Open-source Flutter IAP plugin aligned with OpenIAP spec, supporting StoreKit 2 and Play Billing 8 via type-safe bindings.

FlutterFlow — Visual no-code builder for Flutter apps with Firebase integration and code export support.