Context Engine alternatives

Tools that do what Context Engine does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from Context Engine.

Read 2026-10-24 · Context Engine itself: Free plan · From $12/mo

With a free plan or free to use: Hjarni, Kognite, SkyOS, ContextForge Memory, Jade Note, Padlet.

10 alternativesUnlike Context Engine

#1
Hjarni Knowledge MCP · sign-in
Stores plans, decisions and preferences as markdown notes that ChatGPT and Claude can search and edit across chats.
Same job
35
Active
From $12/mo
2026
#2
Kognite Knowledge MCP · sign-in
Hosted MCP server storing a shared knowledge graph that Claude, Cursor and other coding agents read and write.
Costs more
1
Active
From $19/mo
#3
SkyOS Knowledge MCP · sign-in
Stores short dated notes per project so Claude, ChatGPT and Codex can resume them in a new chat.
Same job
1
Active
Free
#4
Agentage Memory Knowledge MCP · open
Stores plain markdown memory files in an EU-hosted account and shares them with Claude, ChatGPT, Cursor and Claude Code over MCP.
Own MCP server
190
Active
#5
ContextForge Memory Productivity
Stores and retrieves project context across Claude, Cursor, Copilot via MCP server with semantic search.
CheaperAlso: RAG
1
Active
From $9/mo
#6
Jade Note Knowledge MCP · sign-in
Stores notes that Claude or ChatGPT read and write over MCP, with semantic search, typed links and versioned edits.
CheaperAlso: Search, Workflow automation
Little sign of use
Active
From $3/mo
#7
Atly Knowledge MCP · open
Ranks and explains local places against a person's stated intent, such as a quiet café for remote work, through an app or API.
Also: SearchOwn MCP server
3.5M
Active
#8
Perplexity AI assistants
AI search engine that answers questions from live web sources with citations, with plans for teams and companies.
More widely used
4.2M
2022
#9
NoteGPT Knowledge
Summarizes lectures, videos, and documents; generates notes, slides, and audio content for learning and research.
Also: Summarization, WritingMore widely used
1.3M
Active
From $9.99/mo
#10
Padlet Knowledge
Lets people collect, organize and share notes on shared digital boards and whiteboard canvases.
More widely used
132k
2012

← Context Engine: the full card All Knowledge tools →

How this list is made: the words Context Engine is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.