No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Diffbot
APIs that turn public web pages into structured data, with crawling, web search and a knowledge graph for AI builders.
Since 2011
Developer tools · Developers
- Recall
Saves videos, podcasts, PDFs and articles, summarises them, and lets you search and chat across what you saved.
Since 2022
Free plan · Notes and knowledge · Individuals and families
- hdoc
Generates searchable API docs from C++ code and Markdown pages, with optional hosting, for C++ teams.
Since 2021
Developer tools · Developers
- Opensidian
A free markdown notes app for Linux that opens Obsidian vaults, with wikilinks, backlinks and a graph view.
Since 2026
Free · Notes and knowledge · Individuals and families
- cyberWriter
Note app for iPhone, iPad and Mac that keeps a folder of Markdown files linked with wikilinks, backlinks and a graph, plus PDF export.
Since 2026
One-off payment · Notes and knowledge · Individuals and families
- Capacities
Note taking app where people, books, ideas and links become linked entries rather than documents sorted into folders.
Free plan · Notes and knowledge · Individuals and families
- Atomic
A notes app that auto-tags your notes, links related ideas, searches by meaning and writes summaries from them.
Since 2026
Free plan · Notes and knowledge · Individuals and families
- Neuron
A notes app that collects articles, links and PDFs and quizzes you on them so you remember what you saved.
Since 2026
Subscription · Notes and knowledge · Individuals and families
- Cohestry
Notes app for Mac and iPhone that spots related notes and lets you browse them as a three dimensional graph, with Apple Notes import.
Free plan · Notes and knowledge · Individuals and families
- Vertex
A Chrome extension that saves notes and full snapshots of web pages so you keep them after they change or vanish.
Since 2026
Free plan · Notes and knowledge
- Brainio
A Markdown note app that shows your notes as mind maps and a linked graph, with live shared editing.
Since 2019
Free · Notes and knowledge
- Cognee
Memory layer for AI agents that links company data from Slack, GitHub and Linear, self-hosted or on their cloud.
Since 2026
Developer tools · Developers