Preview. These maps are our reading of public sources and haven't been checked with the projects' maintainers yet.
Jev.directory
A community gallery of real systems built on Jev and the primitives (noul/choice/score) they send, with sign-in via GitHub to submit and links into TypeSafe's Playground.
jev.directory/Maintenance
Site live on 2026-10-25, but all 16 listed systems are dated 'last month' (September) on the Recent sort; 11 of them were posted by the site's own account. No source repo or operator named. (checked 2026-10-25)
In The Jev ecosystem
Where it stands apart
- How is the main thing licensed? proprietary or closed source (5% of 21 others)
- Can it run entirely on your own device or infrastructure, without the maker's servers? no, it needs the maker's servers (19% of 21 others)
- Do you need an account to use it? optional account (5% of 21 others)
- Which models answer its questions? Pick the first that applies. none: it measures, compares, or catalogs Jev-style systems (10% of 21 others)
- What is the main thing it ships? a benchmark or directory (10% of 21 others)
- Does it check whether its probabilities can be trusted? Pick the first that applies. probabilities are not central to it (0% of 21 others)
- Where do the decisions run by default? not applicable (benchmark or directory) (10% of 21 others)
- Are its answers typed values rather than generated text? (identity question) not applicable (benchmark or directory) (10% of 21 others)
What it shares with most of the community
- Who is it for? developers (95% of 21 others)
- Which shared standard or format does it mainly build on? TypeSafe's System One API (state + typed questions, /v1/systemone) (81% of 21 others)
- Which question types does it handle? Jev's three: noul, choice, score (67% of 21 others)
- Does it train on Jev's outputs? (TypeSafe's customer agreement forbids using output to distill or build competing models.) it doesn't train models (68% of 19 others)
- Can you use it without a TypeSafe account? yes, no TypeSafe account involved (62% of 21 others)
Not documented
The public sources we read don't say:
- How is it mainly sustained?
Nearest neighbors
- DoubtBench 67% of 15 shared answers match
- JevBench (Benchmark Heaven) 60% of 15 shared answers match
- jev-align (Sutro) 53% of 15 shared answers match
Every answer
| Question | Answer | Source |
|---|---|---|
| Is it actively maintained? | maintenance or slowing No submissions dated October. | source 2026-10-25 |
| How is the main thing licensed? | stands apart proprietary or closed source No source code or license found; GitHub repos named jev-directory (microdeft, dubzeb) are unrelated stubs. | source 2026-10-25 |
| How is it mainly sustained? | Not documented Operator not named on the site. | source 2026-10-25 |
| Can it run entirely on your own device or infrastructure, without the maker's servers? | stands apart no, it needs the maker's servers | source 2026-10-25 |
| Do you need an account to use it? | stands apart optional account Browsing and copying open; GitHub sign-in to share your own system. | source 2026-10-26 |
| Who is it for? | developers | source 2026-10-25 |
| Which shared standard or format does it mainly build on? | TypeSafe's System One API (state + typed questions, /v1/systemone) Catalogs TypeSafe primitives. | source 2026-10-26 |
| Which models answer its questions? Pick the first that applies. | stands apart none: it measures, compares, or catalogs Jev-style systems | source 2026-10-25 |
| What is the main thing it ships? | stands apart a benchmark or directory | source 2026-10-25 |
| Which question types does it handle? | Jev's three: noul, choice, score | source 2026-10-25 |
| Does it check whether its probabilities can be trusted? Pick the first that applies. | stands apart probabilities are not central to it | source 2026-10-25 |
| Where do the decisions run by default? | stands apart not applicable (benchmark or directory) | source 2026-10-25 |
| Does it train on Jev's outputs? (TypeSafe's customer agreement forbids using output to distill or build competing models.) | it doesn't train models | source 2026-10-25 |
| Can you use it without a TypeSafe account? | yes, no TypeSafe account involved Browsing is open; submitting needs GitHub sign-in. | source 2026-10-25 |
| Are its answers typed values rather than generated text? (identity question) | stands apart not applicable (benchmark or directory) | source 2026-10-25 |
| Does it publish head-to-head numbers against Jev? | no published benchmark numbers | source 2026-10-25 |
Sources
This page was derived from:
- Web page · jev.directory/ · read 2026-10-25
- Web page · jev.directory/systems · read 2026-10-25
- Web page · jev.directory/systems?sort=recent · read 2026-10-25
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