semantic-source VS massiv

Compare semantic-source vs massiv and see what are their differences.


Parsing, analyzing, and comparing source code across many languages (by github)
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semantic-source massiv
22 0
8,680 372
0.4% -
7.2 0.0
11 months ago 8 days ago
Haskell Haskell
MIT License BSD 3-clause "New" or "Revised" License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of semantic-source. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-05-28.
  • How to Get Started with Tree-Sitter
    3 projects | | 28 May 2023
    ah, easy. it's because support has not been added into which is the tech that powers the GitHub UI. Adding support is pretty easy/mainly glue code [1] that imports the tree sitter API.


    3 projects | | 28 May 2023
    I believe they use semantic (Haskell program that uses tree-sitter) for navigation:

    So the answer may be that semantic does not yet have support for the language in question.

  • Scala community now has control over the official Scala grammar for tree-sitter 🎉
    3 projects | /r/scala | 3 Jan 2023
  • 2022 State of Haskell Survey
    6 projects | | 3 Nov 2022
  • 11 Companies That Use Haskell in Production
    7 projects | | 4 May 2022
    GitHub used Haskell for implementing Semantic, a command-line tool for parsing, analyzing, and comparing source code.
  • What happened with GitHub's semantic project?
    3 projects | /r/haskell | 29 Jan 2022
    As far as engineering effort, you can read this GitHub comment for an overview of where we’d like to take the project in the future. The tl;dr here is that the open sum type view of the world made it very concise to fold over syntax trees (since such a view of data is ultimately unityped, recursion schemes Just Work), but the tradeoff thus associated—namely, that you have to parse a concrete syntax tree into an open-sum view (a complicated and painful-to-read process), that you can never really be sure how a given syntax tree is shaped, and that the types don’t help you nearly as much as they could—proved to be too onerous to deal with. Going forward, we’re generating syntax types from the AST once per target language, and working on an abstraction (probably via this generated code; I made five separate efforts at using Generics for this, and failed every time) that recovers at least some of the convenience of recursion schemes. It turns out that recursion schemes over a mutually recursive syntax tree—as pretty much every language’s syntax trees are, in practice—are pretty much an unsolved problem, especially when extended to languages like TypeScript, which have hundreds of different syntax nodes.
    3 projects | /r/haskell | 29 Jan 2022
    I'm just curious. It seems there hasn't been much activity in Is GitHub still using semantic it to power some code navigation features? Has it been abandoned or is there some successor project that has taken its place? Is there any writeup / lessons learned about this project?
  • Stack Graphs
    6 projects | | 9 Dec 2021
    is this from Github semantic (

    Seems very suspicious since it’s the same goal using the same technologies. The latest commit is 4mo ago but i assume they have a closed-source version they’ve been working on.

    6 projects | | 9 Dec 2021
    Meanwhile their Tree-Sitter-based semantic parser[1] looks abandoned. There is even rotting for years pull request[2] adding support of the same stack graphs into it.



  • I just published an experimental `tree-sitter` grammar for Swift!
    2 projects | /r/swift | 28 Aug 2021
    Does anyone here have experience with tree-sitter? If you aren't familiar, tree-sitter is a parser generator tool that builds parsers to use with an incremental parsing library. It's what's responsible for AST parsing on GitHub, for instance.


Posts with mentions or reviews of massiv. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning massiv yet.
Tracking mentions began in Dec 2020.

What are some alternatives?

When comparing semantic-source and massiv you can also consider the following projects:

hnix - A Haskell re-implementation of the Nix expression language

Octree - Octree is a shallow tree structure for 3-dimensional points

minst-idx - Read and write data in the IDX format used in e.g. the MNIST database

Frames - Data frames for tabular data.

hebrew-time - Hebrew dates and prayer times.

llrbtree - Left-leaning red-black trees

diffsitter - A tree-sitter based AST difftool to get meaningful semantic diffs

Glean - System for collecting, deriving and working with facts about source code.

refined - Refinement types with static checking

cantor-pairing - Convert data to and from a natural number representation

jump - Jump start your Haskell development

months - Month, YearMonth, Quarter, YearQuarter