Top 20 open-source products relevant to APIs and Productivity

Cal.com (formerly Calendso) is the open source Calendly alternative.

Open Source

Open source API development ecosystem.

Open Source freemium

thirdweb is an ecosystem of SDKs, dev tools, and dashboards that help teams build and manage web3 apps. Deploy custom or pre-built contracts to ETH, MATIC, AVAX, & more. .

Open Source free

Build full-stack applications without code.

Open Source freemium $28.0 / Monthly

Frontend Development and Design.

Open Source

Apache APISIX is a dynamic, real-time, high-performance Cloud-Native API gateway, based on the Nginx library and etcd.

Open Source

Open source time tracker.

Open Source

The enterprise ready webhooks service, open-source and in the cloud.

Open Source freemium

Easy API endpoint load testing without breaking the bank.

Open Source

A tool for manage and beautify your code screenshots.

Open Source

Open Source API Security Platform.

Open Source

Kreya is a GUI client for gRPC and REST APIs with innovative features for environments, authorizations and more.

Open Source

webhooks.fyi: The place to learn how to build & use webhooks.

Open Source

A cross-platform HTTP client desktop application for testing HTTP and REST APIs, WebSocket, GraphQL (including subscriptions) and gRPC endpoints.

Open Source

Isomorphic TypeScript client for PostgreSQL with replication.

Open Source

Convert the Internet into your own API using GPT.

Open Source

Permify-Gorm is an open-source library for adding granular permissions and role management to your SaaS apps, so you can get the market faster.

Open Source

No more manually written browser automation scripts – DeploySentinel Recorder automatically generates Playwright and Puppeteer scripts directly from your browser interactions (ex.

Open Source

Monitor APIs or web services based on a configurable time.

Open Source

AI Workflows.

Open Source