1,919 tools
Free planSoftware & utilities
FlatBuffers is Google’s cross-platform serialization library for reading structured data without unpacking into separate objects. It targets performance-sensitive apps such as games and services that need compact buffers, schema evolution, and bindings for many languages.
Free planSoftware & utilities
Flect helps podcast listeners find exact moments inside long episodes by describing what they remember. Users search a curated video library of podcast clips on YouTube, save shares, and upgrade for broader libraries and upcoming channel chat features.
Free tier unknownSoftware & utilities
FleetProxy sells residential, mobile, datacenter, and static ISP proxies for scraping, ad verification, and multi-account workflows. The pricing hub advertises transparent pay-as-you-go per-GB or per-IP rates across rotating and sticky products with tooling such as a proxy tester and IP lookup.
Free tier unknownSoftware & utilities
Flexisip is Belledonne Communications’ SIP server suite for building VoIP, messaging, and push-enabled communication services. It integrates with existing SIP infrastructure, supports video conferencing features, and can embed into connected devices alongside the Linphone ecosystem.
Free tier unknownSoftware & utilities
Flexport is a freight forwarding and supply chain platform for planning, booking, and tracking international shipments. It combines ocean, air, and trucking services with customs, insurance, and visibility software for importers and exporters.
Free planSoftware & utilities
Flezr is a no-code site builder that publishes thousands of dynamic pages from Google Sheets or Supabase data. Visual card designers, search and multi-select filters, HTML blocks, and template libraries help agencies launch data-driven directories without writing backend code.
Free planSoftware & utilities
Flightmare is an open-source modular quadrotor simulator from the UZH Robotics and Perception Group. It pairs a Unity rendering engine with a decoupled physics engine, multi-modal sensors, parallel RL training, and VR interaction for robotics research.
Free tier unknownSoftware & utilities
It targets HR teams improving worker financial health and engagement.
Free tier unknownSoftware & utilities
Floracene describes itself as the operating layer for healthcare on a minimal public site. The company positions a contact channel for organizations exploring its healthcare infrastructure offering.
Free to startSoftware & utilities
Flow Club is a virtual coworking community that uses body doubling and hosted focus sessions to help members beat procrastination and finish deep work. Members join live video sessions, declare goals, work quietly alongside peers, and debrief progress with volunteer hosts.
Free planSoftware & utilities
The Fast Light Toolkit (FLTK) is a cross-platform C++ GUI library for Linux, Windows, and macOS with OpenGL support and a companion UI builder called FLUID. It targets lightweight native apps that can be linked statically or as a shared library.
Free planSoftware & utilities
Fluentd is a CNCF-graduated open source log and event collector that unifies data ingestion before routing to backends. Its plugin ecosystem connects hundreds of sources and outputs so teams can decouple producers from analytics or storage systems.
Free planSoftware & utilities
Flurl is a fluent .NET library for building URLs and making testable HTTP calls, combining chainable request configuration with an HttpTest helper for unit tests. It ships on NuGet as Flurl and Flurl.Http packages under an MIT license.
Free planSoftware & utilities
Fluxer is a free, open-source chat app for friends, groups, and communities with text, voice, video, screen sharing, and self-hosting options. Optional Plutonium subscriptions fund development and unlock higher limits for uploads, streaming quality, and profile customization.
Free tier unknownSoftware & utilities
Forge Robotics builds modular autonomous factory modules—shipping-container-sized units that weld, scan, and verify production with sub-millimeter vision. The company targets U.S. manufacturers facing labor gaps with snap-together capacity that scales without proportional headcount.
Free planSoftware & utilities
Developers point forms at Formspree URLs instead of maintaining their own form backends.
Free planSoftware & utilities
Formula.dog (Biscuit) turns plain-English spreadsheet problems into Excel, Google Sheets, VBA, or regex solutions with a playful playground interface. Free users get five formulas per day without an account, with packs or a monthly unlimited plan for heavier use.
Free tier unknownSoftware & utilities
Foyr Neo is Foyr's cloud interior design offering for 3D floor plans and renders.
Free planSoftware & utilities
FreedomBox is a personal server project that packages free software apps to run digital services from home with privacy. It targets non-experts with click-to-install server applications for chat, file sharing, VPN, and other self-hosted tools on inexpensive hardware.
Free planSoftware & utilities
FreeFlarum hosts managed Flarum forums with one-click setup so communities can launch a modern discussion site in minutes. The service emphasizes free hosting, quick registration, optional extensions, and the ability to export data if you move to self-hosted Flarum later.
Free planSoftware & utilities
Friendica is a decentralized federated social network software release users can run on their own servers or join via public nodes. It emphasizes cross-network relationships, privacy controls, and community hosting without a central authority.
Free planSoftware & utilities
Frizzle is a classroom operating system that reads handwritten student work in real time across math, ELA, science, social studies, and essays. Teachers snap stacks from phones or doc cams to get step-level feedback, live class dashboards, and misconception analytics without abandoning paper workflows.
Free tier unknownSoftware & utilities
The company is recruiting shops into a pilot program while publishing licensing plans on its marketing site.
Free planSoftware & utilities
FusionAuth is a customer identity and access management platform covering authentication, authorization, user management, and threat detection. It supports self-hosted Community editions and paid FusionAuth Cloud tiers for teams that want managed hosting.
Showing 816 of 1,919 tools
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