ForkFree

Developer tools

jinja

by pallets

Jinja is a Python templating engine that lets you write documents with placeholders, loops and conditions, then fills them in with data. It is used to generate web pages, emails, config files and reports from Python code.

Worth a lookEstablished, with a few things to check (listed below).

View on GitHubProject website

Stars
11.8k
Licence
BSD-3-Clause
Runs on
Your computer
Setup
Easy
Language
Python
Age
5853 days

What you can do with it

  • Build HTML pages that share a common layout using template inheritance
  • Generate personalised emails, invoices or reports from data
  • Safely render user-supplied templates in a sandboxed environment

Make money with it

A freelance developer could offer automated document or email generation, such as invoices and reports, as a paid service for small businesses.

An idea, not financial advice. Check the licence before charging for anything built on it.

Ways a business could use it

  • Produce branded invoices, quotes and email newsletters automatically from customer data
  • Build and maintain a website or web app with reusable page layouts, saving design and development time

Can you use it commercially?

Free to use, change and sell, including in paid products. Keep the copyright notice.

Not legal advice. Read the project's licence file before building a product on it.

Getting it running

It is a Python library, installed with pip and then imported into your own code (the README does not give install steps, but this is the standard method).

Follow the official instructions in the project README.

Things to check

  • It is a library, so it needs Python programming knowledge and is not a ready-made app

Checked 27 Oct 2026. Summary drafted by AI from the project's README.

More in Developer tools

gpu-unlock Zagitta
Check the licence

This tool unlocks the FP/BF16 instruction issue rate on Nvidia 3000-series cards, doubling the speed of certain operations.

10.4k stars +1058 a day Unclear
graphify Graphify-Labs
Worth a look

Graphify turns a codebase, along with its documents, PDFs, SQL schemas and configuration files, into a graph of connected concepts that you can search and question. It works as a /graphify command inside AI coding assistants such as Claude Code, Cursor, Codex and Gemini CLI, so they can look things up in the graph instead of reading every file.

136.4k stars +430 a day Apache-2.0
archify tt-a1i
Worth a look

Archify is a skill you add to an AI coding agent such as Claude Code, Codex, Cursor or OpenCode. It turns a description, plan or code repository into an interactive HTML diagram or one-page explainer that you can explore and share.

90.1k stars +339 a day Apache-2.0