OPEN APPLICATION 001 · macOS · Windows · Linux

OffsetDock

A calm, local-first operations cockpit for the streams that refuse to sit still.

Download · Apple silicon Download · Intel

Version 0.1.0 · MIT licensed · unsigned development build · no telemetry · source on GitHub ↗

DEMO CLUSTER

TOPIC / ORDERS.V1

Messages

12 partitions3× replication0 under-replicated

{ "event": "order.accepted", "offset": 48291 }

{ "event": "order.shipped",  "offset": 48292 }

{ "event": "order.delivered","offset": 48293 }

YOUR CLUSTERS STAY YOURS

Credentials are encrypted with the macOS keychain. Kafka traffic runs in the desktop process. No account, cloud relay, analytics, or telemetry.

WHAT SHIPS IN 0.1

Everything needed for the everyday Kafka investigation loop.

Explore

Filter brokers, topics, partitions, and consumer groups from one cluster tree.

Inspect

Fetch by offset or timestamp; search keys, values, and headers; view JSON, XML, text, or hex.

Diagnose

See committed and end offsets, per-partition lag, membership, assignments, and group state.

Operate

Produce events, import message batches, add partitions, edit topic configuration, and reset offsets.

Connect safely

Use TLS, mTLS, SASL PLAIN/SCRAM, or AWS MSK IAM while credentials remain protected locally.

Practice first

Explore a built-in demo cluster before connecting to infrastructure.

SEE IT IN ACTION

A clear view from message payload to consumer lag.

Captured from the shipping macOS build using OffsetDock's private, in-memory demo cluster.

OffsetDock message browser showing Kafka records and a structured payload inspector — **01 · Inspect messages**Search records, scan offsets, and inspect structured payloads without leaving the desktop.

OffsetDock consumer group view showing partition lag — **02 · Diagnose lag**Compare committed and end offsets across every partition.

OffsetDock welcome screen with demo cluster and cluster connection actions — **03 · Explore safely**Start with realistic sample data before connecting to a broker.

DOWNLOAD & VERIFY

Native builds for every desk.

OffsetDock 0.1.0 is available for macOS, Windows, and Linux as a free, unsigned development release. Choose the package that matches your operating system and processor.

macOS Apple silicon · 125.5 MB macOS Intel · 143.0 MB Windows x64 installer · 107.4 MB Linux x64 AppImage · 129.2 MB Linux ARM64 AppImage · 129.0 MB Debian x64 · 103.2 MB All release files ↗

Platforms: macOS 13+ · Windows x64 · Linux x64/ARM64
License: MIT · source available
Signing: Unsigned development builds
Windows installer SHA-256: 8784a770cc9a53e626db3c138c33cb4bee64df988af5d2d2c56e2fc41190df1b
Linux x64 AppImage SHA-256: 896cd2c5526a00fc9e71c5039a36a62c2621c48f0927b0e27a6222668b1a3866
Linux ARM64 AppImage SHA-256: a55ecac2b0b9483fe0f1422c2e069208825eb48d86d10817429c80ed2116c01d
Debian x64 SHA-256: 68ec2ee5750ae683b69ba1247f6abf92b7ffd333207a08b7aff76b172decb1ed
macOS checksums: Apple silicon: b0452e7f7c530a4882ec5fa7bdffab90293e85404f5ba8d6ab8b96c9fccc90b4
Intel: 8bcf11472ccf413366a7457bf650b62662acee8bbf6fe48218fb99daf0510f2d

OPERATOR SAFETY

Power deserves friction.

Destructive topic actions require explicit confirmation.
Offset resets are guarded and limited to idle consumer groups.
A full demo adapter makes exploration useful without touching a real broker.
Secrets never cross into the sandboxed renderer.

NEXT ON THE DOCK

Schema Registry, Kafka Connect, ksqlDB, ACL authoring, richer health history, and explainable operational recommendations.

The first release focuses on the Kafka protocol operations we can test safely. The roadmap deliberately separates planned integrations from shipped capability.