AgentIndex icon
AgentIndex
projectmem logo
projectmem
★ 868
vs
deja-vu logo
deja-vu
★ 1.3k

projectmem vs deja-vu

projectmem: projectmem is an open-source, local-first memory and judgment layer for AI coding agents, designed to capture persistent records of project development, including issues, attempts, fixes, and decisions. It aims to make AI experienced, preventing repetition of past failures and significantly reducing token usage by providing distilled context.; deja-vu: Deja-vu is a zero-dependency, local-first binary that indexes and makes searchable the historical sessions of various AI coding agents. It acts as a universal memory layer, allowing agents to recall past solutions and context efficiently, even from before its installation.

01

TL;DR

projectmem logo
projectmemMemory & Context · ★ 868

Preventing AI agents from repeating past debugging attempts or failed architectural approaches.

Read projectmem full review →
deja-vu logo
deja-vuMemory & Context · ★ 1.3k

Reusing solutions from past agent conversations to avoid re-debugging or re-implementing.

Read deja-vu full review →
02

Side-by-Side Comparison

Field
projectmem logoprojectmem
deja-vu logodeja-vu
Category
Memory & Context
Memory & Context
Stars
★ 868
★ 1.3k
License
MIT
MIT
Install Command
pip install projectmem && cd your-project && pjm init
curl -fsSL https://raw.githubusercontent.com/vshulcz/deja-vu/main/install.sh | sh
Updated
2w ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
AI Agent Memory, Local-First, Developer Tooling
AI Agent Memory, Session Search, Code Assistant
03

Features

projectmem logoprojectmem
01Pre-Commit Warnings: Warns developers before committing if they're repeating failed approaches, modifying high-churn files, or touching unresolved issues.
02Local-First and 100% Private: All memory and data reside locally in a `.projectmem/` directory with no cloud, accounts, or telemetry.
03Global Dashboard: Provides a unified view of all `pjm init`-ed projects, showing grades, issues, savings, and a 'needs attention' list, aggregated at read-time.
04Code Structure + Judgment: Overlays failure heat from the event log directly onto the codebase's import graph, highlighting files with repeated failed attempts.
05Smart Context Injection & Token Efficiency: Distills raw event logs into compact, AI-readable summaries and provides token-budgeted memory blocks, significantly reducing token cost.
deja-vu logodeja-vu
01Fast, Retroactive Session Search
02Automatic AI Agent Memory Recall
03Cross-Machine Memory Synchronization
04Seamless Agent Context Handoff
05Automated Sensitive Data Redaction
04

Use Cases

projectmem logoprojectmem
↳Preventing AI agents from repeating past debugging attempts or failed architectural approaches.
↳Improving AI agent efficiency and reducing token costs by providing distilled, context-aware project memory instead of re-reading raw files.
↳Visualizing project development history, including issues, fixes, and decisions, to understand codebase evolution and identify problem areas.
↳Onboarding new developers or bringing AI agents up to speed on a project quickly by injecting pre-existing project knowledge and decisions.
↳Providing a persistent, auditable record of AI agent interactions and learning within a project.
deja-vu logodeja-vu
↳Reusing solutions from past agent conversations to avoid re-debugging or re-implementing.
↳Debugging complex issues by accessing comprehensive past debugging sessions and design decisions.
↳Maintaining persistent context across different AI agents and development machines.
↳Sharing sanitized session digests with colleagues for onboarding or knowledge transfer.
↳Understanding file change history and decision-making via session blame.
05

Best For

projectmem logoprojectmem
Hidden Gem
deja-vu logodeja-vu
—
FAQ

FAQ

What is the difference between projectmem and deja-vu?
Both projectmem and deja-vu are in the Memory & Context category. projectmem has 868 stars, while deja-vu has 1.3k stars.
Which is better, projectmem or deja-vu?
The best choice depends on your use case. Choose projectmem if Preventing AI agents from repeating past debugging attempts or failed architectural approaches., and deja-vu if Reusing solutions from past agent conversations to avoid re-debugging or re-implementing..
Is projectmem free or open source?
Yes, projectmem is open source on GitHub (MIT).
Is deja-vu free or open source?
Yes, deja-vu is open source on GitHub (MIT).
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Related

Alternatives to projectmem →Alternatives to deja-vu →projectmem details →deja-vu details →