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SQLBolt
PopSQL
Numeracy
Slack SQL
SQL Fiddle
Control
Superintendent.app
DocuCommit.se
BookStack
GitBook
Confluence
Wiki.js
Outline Wiki
Archbee.io
Daux.io
DocuCommit is a self-hosted documentation platform that stores every page as plain Markdown in your own Git repository. There is no database: every edit is a real commit, so revision history, diffs, and restore come from Git itself, not from a vendor's revision table.
Non-developers get a WYSIWYG editor that writes clean Markdown (toggle to source anytime), a guided three-pane merge when two people edit the same page, and paragraph comments stored in a sidecar file so the Markdown stays clean. Developers get files they can grep, and AI agents can read the entire knowledge base with a git clone. No integration layer, no sync pipeline.
Includes full-text search, draw.io and Mermaid diagrams stored next to the Markdown, and one-click export to Markdown, HTML, and PDF. A desktop app for editing, plus a read-only server (Docker) that publishes the docs to the whole team. Leaving costs nothing: the repo is already yours, so there is nothing to migrate out of.
A startup from Sweden.
SQL School
DocuCommit.seBased on our record, SQL School seems to be more popular. It has been mentiond 19 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Tutorials: Many websites offer free SQL tutorials and exercises, such as SQLZoo and Mode Analytics. Source: over 3 years ago
Follow this tutorial. Sign up for a free account and follow along in the Mode report editor. Solve all the practice problems along the way. Source: over 3 years ago
If you are looking to practice your SQL skills, I like Mode to give you a good understanding of the basics as well as the advanced concepts. In this situation, I would simply learn to the test. Source: over 3 years ago
If youre learning SQL for the first time -> mode analytics is my favorite Especially for data analytics, great place to start and I recommend doing beginner and moderate levels. Source: over 3 years ago
I recommend this tutorial to all SQL beginners. My partner, who also had no background in programming, found this very helpful. Source: over 3 years ago
SQLBolt - SQLBolt provides a set of interactive lessons and exercises to help you learn SQL
BookStack - An open source knowledge management application that's focused on ease of use.
PopSQL - Modern SQL editor for teams
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Numeracy - A SQL pad that gives you x-ray vision for your data
Confluence - Confluence is content collaboration software that changes how modern teams work