reef alternatives

Tools that do what reef 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 reef.

Read 2026-10-28

With a free plan or free to use: Pantry Persona, SkyOS, Cobrain, Korpus, Contexel, Kognite, Context Engine.

10 alternativesUnlike reef

#1
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 serverMore widely used
190
Active
#2
Plurality Network Knowledge MCP · sign-in
Stores your preferences, writing style and knowledge in a user-owned memory that browser extensions and MCP pass into chatgpt, claude and gemini.
Same job
207
Active
#3
Pantry Persona Lifestyle MCP · sign-in
Tracks your pantry, recipes, allergies and meal plans inside ChatGPT or Claude so the assistant remembers them across conversations.
Also: Chat assistant
6
Active
From $7.99/mo
#4
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
#5
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
#6
Cobrain Knowledge MCP · sign-in
Stores markdown notes in shared folders that Claude, ChatGPT and other MCP-compatible assistants can read and edit.
Also: Search
Little sign of use
Active
From $7/user/mo
#7
Korpus Knowledge MCP · sign-in
Hosts shared markdown memory bundles of linked documents that people and their AI agents read and write over MCP.
Same job
Little sign of use
Active
From ≈ $5.58/mo
#8
Contexel Developer tools MCP · sign-in
Stores memories you save once and serves them to your AI apps through an MCP connector, privately or shared with a team or family.
Same job
Little sign of use
Active
From $9.99/mo
#9
Kognite Knowledge MCP · sign-in
Hosted MCP server storing a shared knowledge graph that Claude, Cursor and other coding agents read and write.
Same job
1
Active
From $19/mo
#10
Context Engine Knowledge
Stores decisions, notes and files that AI tools save and read over MCP, shared across a team.
More widely used
2.4k linking domains
From $12/mo

← reef: the full card All Knowledge tools →

How this list is made: the words reef 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.