7 Must-Have Free Developer Tools to Supercharge Your Workflow

1️⃣ IDE OneLang

OneLang is an open‑source tool that lets you write code in one language and obtain equivalent output in multiple other languages, enabling cross‑language development.

Website: https://ide.onelang.io/

GitHub: https://github.com/onelang/OneLang

2️⃣ ExtendsClass

ExtendsClass offers a collection of online development utilities that run directly in the browser, including testers, code checkers, HTTP API tools, database tools, and more.

Website: https://extendsclass.com/

3️⃣ free‑for.dev

free‑for.dev is an open‑source directory that aggregates a large number of free resources and tools (SaaS, PaaS, IaaS, etc.) for developers.

Website: https://free-for.dev/

GitHub: https://github.com/ripienaar/free-for-dev

4️⃣ Kody Tools

Kody Tools lists over 100 development utilities, including code converters, formatters, and compressors.

Website: https://www.kodytools.com/

5️⃣ SaaS Design

SaaS Design provides a collection of open‑source Figma UI design templates that can be used for upcoming projects, along with optional paid templates.

Website: https://www.saasdesign.io/free-figma-templates/

6️⃣ Kandi

Kandi helps you quickly start application development by searching for the right open‑source resources, including libraries, packages, repositories, code snippets, discussions, and documentation.

Website: https://kandi.openweaver.com/

7️⃣ JSON Crack

JSON Crack is an innovative open‑source visual application that converts various data formats (JSON, YAML, XML, CSV, etc.) into interactive charts, earning praise as a data‑formatting powerhouse.

Website: https://jsoncrack.com/

GitHub: https://github.com/AykutSarac/jsoncrack.com