Alternatives

Products that do what Mercury Cortex does

Give your AI coding assistant persistent project knowledge

1. 1
   Cortex▲70

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2. 2
   Cortex by SKYNETLAB▲85

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3. 3
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4. 4
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5. 5
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6. 6
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7. 7
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8. 8
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9. 9
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10. 10
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11. 11
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12. 12
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13. 13
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14. 14
    Open Computer Use▲92

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15. 15
    KodHau▲109

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16. 16
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17. 17
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18. 18
    Reference▲81

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19. 19
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20. 20CO
    Cortex – OS-wide AI with instant context input▲6

    Hey HN! I’m Andrew, and I’ve been building Cortex (https://cortexdesktop.com/) for the last few weeks. Cortex is my attempt to reimagine how we interact with computers - starting with a simple interface, but aiming for something deeper: an AI layer over your OS that understands what you’re doing, remembers it, and helps you dynamically. Right now, Cortex is just a floating overlay you can summon anywhere on your Mac. It works like an inline ChatGPT, but it lets you instantly send that context into the chat by highlighting text - so you don’t have to explain what you’re doing.…

    2025 · cortexdesktop.com

21. 21
    memories.sh▲50

    One layer for memories, skills, and rules across any agent

    Feb 2026

22. 22
    OpenContext▲4

    Persistent, project-local memory for AI coding agent via MCP

    7d ago · opencntx.dev

23. 23
    Projecord▲1

    Keep project decisions consistent across AI tools

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24. 24RM
    Reference MCP – let your AI agents search each other's past sessions▲5

    I was tired of asking my claude code to reference my codex chats to get references to what decisions it made and why ; so I built Reference MCP It, whenever prompted establishes sessions to get direct access - been using it on my system for a bit and was super helpful so I made a repo :) Would love feedback!

    Jun 2026 · github.com

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