sillsdev/harmony

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C# CRDT Library for building offline first apps

Stars: 14
Forks: 4
Open beginner issues: 0
Indexed issues: 21
Avg merge: 3d 21h
Merged PRs (30d): 3

Dominant language: C#
License: MIT
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

21 open issues indexed

[claude] Add an EntityTouches ledger table Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

sillsdev/harmony#120 · Opened Sep 18, 2026
[claude] Snapshot rollback resumes from a stale snapshot and loses intermediate state Open

Data bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

sillsdev/harmony#105 · 2 comments · Opened Sep 2, 2026
ServerCommit no longer enforces required properties on JSON deserialization (regression rc.241 → rc.266) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

sillsdev/harmony#104 · Opened Aug 20, 2026
Test coverage: JsonSyncable multi-client file fan-out and malformed-file tolerance Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 58/100

sillsdev/harmony#100 · Opened Aug 6, 2026
Test coverage: AddRangeFromSync failure dump (DumpFailedSync) path Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 68/100

sillsdev/harmony#99 · Opened Aug 6, 2026
Test coverage: DataModel.AddManyChanges bulk write and chunking Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

sillsdev/harmony#98 · Opened Aug 6, 2026
Test coverage: SnapshotWorker reference removal and cascade delete Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 72/100

sillsdev/harmony#97 · Opened Aug 6, 2026
[claude] Detect and recover when OpaqueChanges become applicable Open

Data bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

sillsdev/harmony#90 · Opened Jul 29, 2026
[claude] Sync head truncates HybridDateTime to milliseconds, permanently stranding commits Open

Data bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sillsdev/harmony#89 · 1 comment · Opened Jul 29, 2026
[claude] Sync: duplicated ClientId causes silent, permanent divergence — add detection and reconciliation Open

Data bug

Difficulty 5/5 Over a week Newbie friendliness 30/100

sillsdev/harmony#79 · Opened Jul 10, 2026
Add API for changes to dispatch sub changes Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sillsdev/harmony#48 · Opened Aug 22, 2025
Add metadata to resources Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sillsdev/harmony#47 · Opened Aug 19, 2025
Build ISyncable for interactive debugging Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sillsdev/harmony#46 · Opened Aug 16, 2025
Refactor snapshot selection Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sillsdev/harmony#36 · Opened Mar 28, 2025
Implement snapshot cleanup Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sillsdev/harmony#35 · Opened Mar 28, 2025
better exception details from snapshot worker Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sillsdev/harmony#27 · Opened Feb 10, 2025
rename Crdt prefix to Harmony where Crdt is referring to the library and no the algorithm Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sillsdev/harmony#22 · Opened Dec 17, 2024
[Idea] Record when commits are received (and sent?) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sillsdev/harmony#19 · 1 comment · Opened Nov 12, 2024
investigate if we can intercept saving changes in EF to catch changes to the model Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

sillsdev/harmony#14 · Opened Oct 9, 2024
Consider IT support needs Open

Debugger

Difficulty 5/5 Over a week Newbie friendliness 25/100

sillsdev/harmony#13 · 2 comments · Opened Sep 20, 2024
One commit authored in the future could throw off everything Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sillsdev/harmony#7 · 1 comment · Opened Jun 15, 2024

sillsdev/harmony

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