Free desktop software

CANbus
Manager

Every CAN tool you reach for, in one free app.

Built by people who spend their days inside vehicles. Monitor live traffic, decode messages, chart signals, run diagnostics, and manage an Orion BMS from one connection.

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macOS · Windows · Linux. No account, license, or hardware purchase required.

CANbus Manager live CAN traffic monitor with decoded messages and bus load

Networks: Up to four CAN buses at once
Adapters: SLCAN USB-serial and PEAK PCAN-USB
Decoding: DBC files and a built-in DBC editor
Updates: Built-in stable and beta channels

The whole bench in one window.

Ten Tools in One Window

Monitor, Decode, Transmit, Charts, Logging, Protocols, Diagnostics, Network map, DBC Editor, and an Orion BMS dashboard — the bench of single-purpose CAN utilities, replaced by tabs that share one connection.

Up to Four Networks at Once

Connect up to four CAN buses simultaneously — a vehicle bus and a charger bus, or the whole car — with every view filterable per network and frames colour-tagged by which bus they came from.

Speaks the Protocols

CANopen with EDS/DCF files, J1939 with DM1/DM2 fault decoding and address-claim tracking, ISOBUS, NMEA 2000, and CHAdeMO — decoded passively, transports and multi-frame reassembly included.

Interactive Diagnostics

A proper tester, not just a listener: UDS, OBD-II, and KWP2000 over ISO-TP, XCP/CCP calibration, CANopen SDO reads and writes with the object dictionary typing them, NMT, and the CiA 402 drive profile.

See the Whole Network

A live topology map drawn from traffic: every node the bus reveals — CANopen node IDs, J1939 source addresses, DBC transmitters — with per-node message and signal detail one click away.

Orion BMS Built In

A battery dashboard fed by the Orion BMS2 broadcast messages: pack voltage, current, SOC, temperatures, relay states, and every cell voltage live — plus profile management over ISO-TP.

Charts, Logging, Replay

Chart any DBC signal live with zoom and pan, log traffic to file, and replay captured logs through the same decode, chart, and protocol views as live traffic.

Your DBCs, In and Out

Load DBC files to decode signals — including J1939 PGN matching done correctly — edit them in the built-in DBC editor, and keep a library folder that loads on every launch.