AgentIndex icon
AgentIndex
Synaptic logo
Synaptic
★ 31
vs
srclight logo
srclight
★ 57

Synaptic vs srclight

Synaptic: Synaptic transforms codebases into a persistent, queryable knowledge graph to enhance understanding and facilitate advanced development tasks. It uses this graph to answer structural and architectural queries, trace impact, plan refactors, and integrate with AI coding assistants.; srclight: Srclight builds a rich, searchable index of your codebase that AI coding agents can query instantly, replacing inefficient grep/glob calls with precise, structured lookups. It provides comprehensive code intelligence, including symbol search, relationship graphs, and semantic search, all while operating fully local and private.

01

TL;DR

Synaptic logo
SynapticCode Assistant · ★ 31

Understanding Large Codebases: Quickly gain structural clarity, identify "god nodes" or import cycles, and understand surprising cross-module connections in large monorepos or federated repositories.

Read Synaptic full review →
srclight logo
srclightCode Assistant · ★ 57

AI agents can instantly get codebase overviews and find callers/callees, drastically reducing orientation time.

Read srclight full review →
02

Side-by-Side Comparison

Field
Synaptic logoSynaptic
srclight logosrclight
Category
Code Assistant
Code Assistant
Stars
★ 31
★ 57
License
AGPL-3.0
MIT
Install Command
cargo install --path bin/synaptic
pip install srclight
Updated
5d ago
1w ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
code analysis, knowledge graph, static analysis
Code Indexing, AI Agent Tooling, Semantic Search
03

Features

Synaptic logoSynaptic
01Multi-language Code Graph Generation: Extracts symbols and relationships across 30+ programming languages using tree-sitter to build a comprehensive code knowledge graph.
02Advanced Code Querying & Analysis: Supports structural and architectural queries (SYNQL), reverse impact analysis ("what depends on this?"), and time-travel diffing across Git history.
03Safe Refactoring & Change Forecasting: Generates confidence-scored execution plans for refactors (rename, move, extract) and forecasts the blast radius, at-risk tests, and potential cycles of a change before it's made.
04AI Assistant Integration via MCP Server: Exposes 28 read-only tools over an MCP server (stdio or HTTP) for AI coding assistants to leverage the graph for tasks like subgraph search, impact prediction, and structural analysis.
srclight logosrclight
01Fully offline and private, ensuring code never leaves your machine.
02Supports 19 programming languages and 10 document formats for comprehensive indexing.
03Provides 4 search modes, including symbol names, source code, documentation, and semantic search, with hybrid RRF fusion.
04Acts as a comprehensive MCP server with 43 tools for AI agents, covering code graphs, impact analysis, and git intelligence.
05Supports multi-repo workspaces, allowing simultaneous search across all your repositories.
04

Use Cases

Synaptic logoSynaptic
↳Understanding Large Codebases: Quickly gain structural clarity, identify "god nodes" or import cycles, and understand surprising cross-module connections in large monorepos or federated repositories.
↳Pre-commit Impact Assessment: Before making a change, forecast its blast radius, identify at-risk tests, and detect potential new cycles to prevent regressions.
↳Automated Code Auditing: Audit SQL code for performance and security issues (e.g., SQL injection, missing indexes, RLS gaps) directly from the graph.
↳AI-powered Developer Workflow: Integrate with AI coding assistants to enable smarter, graph-aware responses for tasks like context retrieval, refactoring plans, and architectural queries, reducing token costs significantly.
srclight logosrclight
↳AI agents can instantly get codebase overviews and find callers/callees, drastically reducing orientation time.
↳Developers can perform semantic searches with natural language queries like "find code that handles authentication" to locate relevant code by meaning.
↳Before committing changes, analyze the "blast radius" to see what other parts of the codebase will be affected, preventing unintended breaks.
↳Integrate with MCP clients like Claude Code or Cursor to enhance AI's ability to understand, navigate, and modify complex codebases.
↳Index and search across multiple projects simultaneously, providing a unified code intelligence view for large codebases or monorepos.
FAQ

FAQ

What is the difference between Synaptic and srclight?
Both Synaptic and srclight are in the Code Assistant category. Synaptic has 31 stars, while srclight has 57 stars.
Which is better, Synaptic or srclight?
The best choice depends on your use case. Choose Synaptic if Understanding Large Codebases: Quickly gain structural clarity, identify "god nodes" or import cycles, and understand surprising cross-module connections in large monorepos or federated repositories., and srclight if AI agents can instantly get codebase overviews and find callers/callees, drastically reducing orientation time..
Is Synaptic free or open source?
Yes, Synaptic is open source on GitHub (AGPL-3.0).
Is srclight free or open source?
Yes, srclight is open source on GitHub (MIT).
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