HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
mozilla
mentat
Rust2016–2022
mozilla / mentat · Archived

mentat

UNMAINTAINED A persistent, relational store inspired by Datomic and DataScript.

22Distinct people
27Mentions
0Explicit recommenders
1.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

UNMAINTAINED A persistent, relational store inspired by Datomic and DataScript.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 2:59:53 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year27 dated mentions

Observed mentions: 2016-10-04 15:00:15 UTC to 2022-11-18 18:21:05 UTC.

0369122016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 3 mentions; 3 submissions, 0 comments20162017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 7 mentions; 2 submissions, 5 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 11 mentions; 1 submissions, 10 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2022

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC330
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC725
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC11110
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC101
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC101
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC404

What Hacker News says

7 sources
That's very disappointing. While I don't begrudge Cognitect money, it's obviously possible to make money with an OSS database and I wish they'd gone that route. It's my opinion that your database is the #1 most important part of your stack to be open, as your data is the most important thing. I've been considering trying to get up to speed with Mentat[0], which is a Mozilla project to create a Datomic-like layer over SQLite for desktop applications, and help out with that or even try to start a full open source clone of Datomic, though probably won't happen for a good while due to real life happening. It's got so many good ideas and it sucks to see them go to waste in a proprietary database where basically nobody gets to use them. [0]: https://github.com/mozilla/mentat
In Migration from Postgres to Datomic

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.