SPI alternatives
As of 5 November 2026, 39 iot platforms protocols are named by companies instead of SPI: Modbus by 2,078 companies, CAN bus by 1,775, I2C by 1,523.
As of 5 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
- SPI, companies in postings
- 1,569
- Most used alternative
- Modbus · 2,078
- Fastest hiring, 90 days
- Modbus
- Alternatives ranked
- 39
- Catalogue
- T-1.0.1-prov
iot platforms protocols companies choose instead of SPI
Companies naming each tool in their own postings, and postings in the last 90 days. Bars are relative to the category leader.
| # | Alternative | Companies | companies | vs SPI | postings, 90 d | Compare |
|---|---|---|---|---|---|---|
| 1 | ModbusModbus Organization | 2,078 | 132% | 5,703 | SPI vs Modbus → | |
| 2 | CAN busISO | 1,775 | 113% | 5,652 | SPI vs CAN bus → | |
| 3 | I2CNXP | 1,523 | 97% | 4,848 | SPI vs I2C → | |
| 4 | UART(industry standard) | 1,249 | 80% | 3,232 | SPI vs UART → | |
| 5 | MQTTOASIS | 1,209 | 77% | 2,662 | SPI vs MQTT → | |
| 6 | EtherNet/IPODVA | 1,056 | 67% | 2,396 | SPI vs EtherNet/IP → | |
| 7 | OPC UAOPC Foundation | 940 | 60% | 2,107 | SPI vs OPC UA → | |
| 8 | PROFINETPROFIBUS & PROFINET International | 917 | 58% | 2,035 | SPI vs PROFINET → | |
| 9 | PROFIBUSPROFIBUS & PROFINET International | 704 | 45% | 1,644 | SPI vs PROFIBUS → | |
| 10 | BACnetASHRAE | 600 | 38% | 1,759 | SPI vs BACnet → | |
| 11 | USBUSB Implementers Forum | 597 | 38% | 1,792 | SPI vs USB → | |
| 12 | Bluetooth Low EnergyBluetooth SIG | 476 | 30% | 949 | SPI vs Bluetooth Low Energy → | |
| 13 | RS-485TIA | 467 | 30% | 998 | SPI vs RS-485 → | |
| 14 | OPC (OPC UA)OPC Foundation | 455 | 29% | 1,194 | SPI vs OPC (OPC UA) → | |
| 15 | RS-232EIA | 450 | 29% | 1,039 | SPI vs RS-232 → | |
| 16 | KNXKNX Association | 402 | 26% | 708 | SPI vs KNX → | |
| 17 | EtherCATEtherCAT Technology Group | 379 | 24% | 889 | SPI vs EtherCAT → | |
| 18 | BluetoothBluetooth SIG | 348 | 22% | 657 | SPI vs Bluetooth → | |
| 19 | IEC 61850IEC | 327 | 21% | 1,116 | SPI vs IEC 61850 → | |
| 20 | DNP3IEEE | 323 | 21% | 896 | SPI vs DNP3 → | |
| 21 | DeviceNetODVA | 288 | 18% | 607 | SPI vs DeviceNet → | |
| 22 | DDS (Data Distribution Service)Object Management Group | 285 | 18% | 666 | SPI vs DDS (Data Distribution Service) → | |
| 23 | LIN BusLIN Consortium | 269 | 17% | 1,217 | SPI vs LIN Bus → | |
| 24 | CAN FDBosch | 183 | 12% | 542 | SPI vs CAN FD → | |
| 25 | SAE J1939SAE International | 182 | 12% | 467 | SPI vs SAE J1939 → | |
| 26 | ZigbeeConnectivity Standards Alliance | 182 | 12% | 430 | SPI vs Zigbee → | |
| 27 | RS-422TIA/EIA | 181 | 12% | 615 | SPI vs RS-422 → | |
| 28 | 175 | 11% | 553 | SPI vs UDS (ISO 14229) → | ||
| 29 | 170 | 11% | 379 | SPI vs GPIO → | ||
| 30 | CANopenCAN in Automation | 162 | 10% | 294 | SPI vs CANopen → | |
| 31 | NFCNFC Forum | 148 | 9% | 362 | SPI vs NFC → | |
| 32 | DMX512USITT | 123 | 8% | 151 | soon | |
| 33 | LonWorksEchelon | 116 | 7% | 407 | soon | |
| 34 | ARINCSAE ITT | 114 | 7% | 503 | soon | |
| 35 | EcoStruxureSchneider Electric | 109 | 7% | 338 | soon | |
| 36 | LoRaWANLoRa Alliance | 109 | 7% | 186 | soon | |
| 37 | Azure IoT HubMicrosoft | 102 | 7% | 160 | soon | |
| 38 | IO-LinkIO-Link Community | 100 | 6% | 185 | soon | |
| 39 | DALIDiiA | 99 | 6% | 154 | soon |
Filter on any of them, or on SPI users who also name an alternative, and open the person who owns the stack.
Start free, no card. The first 20 are above; e-mails are verified at the mail server when you open them.
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
39 iot platforms protocols are named by companies instead of SPI: Modbus by 2,078 companies, CAN bus by 1,775, I2C by 1,523, measured from their own job postings. (Breaknorm, 5 November 2026, https://breaknorm.co/tools/spi-bus/alternatives)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- RankingCompanies whose own postings name the tool as the team's system, from the Breaknorm technology catalogue T-1.0.1-prov. Editions are folded into their parent product.
- 90-day postingsOpen postings first seen or posted in the last 90 days that name the tool.
- Not includedRatings, prices, feature claims, sponsored positions.
SPI alternatives: questions
What is the most used alternative to SPI?
Modbus: 2,078 companies name it in their own job postings, against 1,569 for SPI.
How is this list ranked?
By the number of companies whose own postings name the tool as the team's system (Breaknorm technology catalogue T-1.0.1-prov), then by postings in the last 90 days. No ratings, no vendor input, no sponsored positions.
Does this say which is better?
No. It says who uses what, by company size, industry and country, so you can see which tools companies like yours choose. For features and prices, read the vendors.
Can I get the companies on any of these?
Yes: click the tool, see the first 20 companies, and sign up for the full list with verified e-mails. Counting is free.
Get these companies your way
The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.
Every company on SPI
or on what replaces it
Connect the MCP server, filter on any tool. Start free, no card.