Hacker ApprovedDepartments

Jazz

Shares rank 3 of 4 sync engines by recommenders

People recommend Jazz for its developer experience and because it is purpose-built for peer-to-peer collaborative apps.

People recommend Jazz for its developer experience and because it is purpose-built for peer-to-peer collaborative apps.

5 people gave an opinion

recommend it
5
criticize it
0
approval share
100%
Each figure is one person. RecommendsCriticizes

Recommended in 3 of 13 months

  1. November 2025: recommended
  2. December 2025: not recommended
  3. January 2026: recommended
  4. February 2026: recommended
  5. March 2026: not recommended
  6. April 2026: not recommended
  7. May 2026: not recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: not recommended
  12. October 2026: not recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 5 people recommend itNeeds 10 or more, not met.
  • Nobody criticizes itNeeds 2 to 1 or better, met.
  • Recommended in 3 of 13 monthsNeeds 4 or more, not met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Appealing developer experience

    “This looks very compelling from a DX perspective”

    Comment from 19 Jan 2026 in “Jazz – The Database That Syncs”

    “It just looked great from the DX perspective”

    Comment from 20 Jan 2026 in “Jazz – The Database That Syncs”

Other sync engines people recommend

The three most recommended other sync engines, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

Jazz compared with 3 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
SyncKit8280%3——
Zero by Rocicorp7278%4——
JazzThis page50100%3——
ElectricSQL5183%4——
See all 4 sync engines, ranked

What people said

All 5 comments that mention it, newest first. Each links to the original comment.

“A resourceful CLI assistant that actually does things.”

RecommendsComment from 10 Feb 2026 in “Ask HN: What Are You Working On? (February 2026)”

“It just looked great from the DX perspective”

MixedComment from 20 Jan 2026 in “Jazz – The Database That Syncs”

“This looks very compelling from a DX perspective”

RecommendsComment from 19 Jan 2026 in “Jazz – The Database That Syncs”

“Purpose-built for P2P collaborative apps”

RecommendsComment from 28 Nov 2025 in “Show HN: SyncKit – Offline-first sync engine (Rust/WASM and TypeScript)”

“was happy to find https://jazz.tools/ . There are many things in common between these two projects.”

RecommendsComment from 27 Nov 2025 in “Show HN: SyncKit – Offline-first sync engine (Rust/WASM and TypeScript)”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.