Tools & models
AI tools and open models, reviewed by using them
Every entry answers the same three questions: what it actually does, what it costs, and how to get a usable result out of it. Free tiers and limits are stated up front, not buried in a pricing table.
Concat Video Editor
Concat is a free, open-source video editor positioned as a direct CapCut replacement. It runs on Windows, macOS, Linux, Android, and iOS, ships under AGPL-3.0 (per its repository), and imposes no watermarks, no export limits, and no paywall.
- tool
- open-source
Tarko AI
Search for "Tarko AI" and you will land on three unrelated products. There is a developer framework for building agents, a study app for students, and an industrial machine vision system.
- tool
- commercial
How this section works
Tools and models share one section because the questions are the same: can I get this running, what does it cost, and is it better than what I already use. A browser product and a set of open weights differ in how you install them, not in how you evaluate them, so splitting them across two menus only made both harder to browse. Each entry states which kind it is at the top, and the quick-facts card carries what matters for that kind — pricing and platforms for a tool, licence and parameter count for a model.
Entries are written after using the thing, not after reading its landing page. If a free tier is capped in a footnote, that cap is repeated at the top of the page. When a product changes its pricing or quietly removes its free plan, the page is corrected and the date at the top moves; the URL never changes, so bookmarks and links keep working. If something stops working entirely it is removed from this list rather than left as a page that wastes your time.