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iot platforms protocols, ranked by real usage_

As of 4 November 2026, Modbus leads iot platforms protocols with 2,067 companies naming it in job postings, ahead of CAN bus at 1,760.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Leader
Modbus · 2,067
Runner-up
CAN bus · 1,760
Most hiring, 90 days
Modbus
Highest postings per company
LIN Bus
Catalogue
T-1.0.1-prov
20,804companies across the category
10%of them on Modbus
55,309postings naming a iot platforms protocol in 90 days
40tools with enough evidence to rank
02 — Ranking

Every iot platforms protocol we can measure

Companies naming the tool, and postings naming it in the last 90 days. Bars are relative to the leader.

#ToolCompaniescompaniesPostings, 90 dayspostingsper company
1
ModbusModbus Organization
2,067
5,6982.8
2
CAN busISO
1,760
5,6103.2
3
SPIMotorola
1,559
4,9353.2
4
I2CNXP
1,515
4,8203.2
5
UART(industry standard)
1,237
3,2242.6
6
MQTTOASIS
1,201
2,6562.2
7
EtherNet/IPODVA
1,048
2,3742.3
8
OPC UAOPC Foundation
935
2,0902.2
9
PROFINETPROFIBUS & PROFINET International
914
2,0362.2
10
PROFIBUSPROFIBUS & PROFINET International
701
1,6452.3
11
BACnetASHRAE
598
1,7432.9
12
USBUSB Implementers Forum
597
1,7863.0
13
Bluetooth Low EnergyBluetooth SIG
473
9342.0
14
RS-485TIA
464
1,0012.2
15
OPC (OPC UA)OPC Foundation
451
1,1932.6
16
RS-232EIA
446
1,0382.3
17
KNXKNX Association
401
7031.8
18
EtherCATEtherCAT Technology Group
378
8842.3
19
BluetoothBluetooth SIG
346
6591.9
20
IEC 61850IEC
324
1,1263.5
21
DNP3IEEE
321
8952.8
22
DeviceNetODVA
285
5982.1
23
DDS (Data Distribution Service)Object Management Group
280
6632.4
24
LIN BusLIN Consortium
266
1,2104.5
25
CAN FDBosch
181
5453.0
26
RS-422TIA/EIA
180
6073.4
27
SAE J1939SAE International
179
4682.6
28
ZigbeeConnectivity Standards Alliance
179
4272.4
29
UDS (ISO 14229)ISO
175
5523.2
30
GPIO
168
3802.3
31
CANopenCAN in Automation
162
2931.8
32
NFCNFC Forum
147
3662.5
33
DMX512USITT
122
1501.2
34
LonWorksEchelon
115
4033.5
35
ARINCSAE ITT
114
4924.3
36
EcoStruxureSchneider Electric
109
3393.1
37
LoRaWANLoRa Alliance
108
1851.7
38
Azure IoT HubMicrosoft
100
1621.6
39
DALIDiiA
99
1541.6
40
HART ProtocolFieldComm Group
99
2652.7
03 — Head to head

Compare two tools

Same data, two columns: who chooses which by size, industry and country.

Modbus vs CAN bus2,067 · 1,760Modbus vs SPI2,067 · 1,559Modbus vs I2C2,067 · 1,515Modbus vs UART2,067 · 1,237Modbus vs MQTT2,067 · 1,201CAN bus vs SPI1,760 · 1,559CAN bus vs I2C1,760 · 1,515CAN bus vs UART1,760 · 1,237CAN bus vs MQTT1,760 · 1,201SPI vs I2C1,559 · 1,515SPI vs UART1,559 · 1,237SPI vs MQTT1,559 · 1,201I2C vs UART1,515 · 1,237I2C vs MQTT1,515 · 1,201UART vs MQTT1,237 · 1,201
Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

Modbus leads iot platforms protocols with 2,067 companies naming it in job postings, ahead of CAN bus at 1,760. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/category/iot-platforms-protocols)
How we know

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 →

  • CatalogueBreaknorm technology catalogue T-1.0.1-prov: 6,296 tools with vendor and category, editions folded into their parent.
  • CompaniesCompanies whose own postings name the tool as the team's system, any confidence. Candidate wish-lists excluded.
  • 90-day postingsOpen postings first seen or posted in the last 90 days that name the tool.
  • Not countedTools used by teams that do not post jobs, and companies without a career site we can read.
FAQ

iot platforms protocols: questions

How is this ranking made?

By the number of companies whose own job postings name the tool as the team's system, from the Breaknorm technology catalogue (version T-1.0.1-prov). No vendor paid for a position and no editor chose the order.

Why is this different from review-site rankings?

Review sites rank by reviews collected. This ranks by companies hiring people to work in the tool, which is closer to seats in use. It under-counts tools used by teams that rarely post jobs.

What about product editions?

Editions and sub-products () are counted under the parent so no company is counted twice.

Can I get the companies behind a number?

Yes: click a tool, see the first 20, and sign up for the full list with verified e-mails. Counting is free.

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