14 categories
Each category gathers the services that solve the same problem, with their free limits lined up side by side.
Platforms for deploying static sites, full-stack apps, serverless functions and containers. Most include a global CDN, automatic HTTPS, custom domains and a deploy on every push to Git.
Postgres, SQLite at the edge, Redis, MongoDB and complete backends with auth and storage built in. Ideal for prototypes, side projects and MVPs that do not need their own infrastructure yet.
Inference APIs, open models, gateways, LLM observability and coding agents. Almost all offer a daily or monthly quota generous enough to experiment and build real demos.
Identity services with prebuilt components, social login, passwordless, enterprise SSO and organisation management. Free plans are almost always measured in monthly active users (MAU).
Transactional email APIs, mail testing environments and form backends for static sites. Perfect for verifications, notifications and contact forms without running an SMTP server.
Observability so you know what happens in production: error capture, performance traces, uptime monitors, synthetic checks, log aggregation and dashboards.
Code hosting, continuous integration, static analysis, test coverage and automatic dependency updates. Nearly all of it is free and unlimited if the repository is public.
From cookieless web analytics to product analytics with funnels, cohorts, session replay and feature flags. Several options are open source and can be self-hosted.
Open data APIs, mock services for prototyping before you have a backend, HTTP clients and automation platforms that wire services together through events.
Collaborative interface editors, infinite whiteboards, diagramming tools and typefaces licensed freely for personal and commercial use.
Scanning for secrets leaked in repositories, dependency supply-chain analysis, HTTP header auditing and checks for compromised credentials.
Issue trackers, wikis, kanban boards, whiteboards and messaging. Free plans are usually enough for small teams or personal projects, with no time limit.
Headless content managers with a REST or GraphQL API, visual editing, content modelling and a CDN. They pair naturally with static site generators such as Astro.
File storage with on-the-fly image transformation, modern format optimisation (WebP/AVIF), smart cropping and CDN delivery.