Best IoT Development Tools in 2026
Updated
In short: Arm Keil MDK is ranked #1 of 15 as of 4 October 2026, ahead of PlatformIO IDE and Arduino IDE. The best-ranked option with a free plan is PlatformIO IDE. The lowest first paid tier on this page is Wokwi at €5.60/mo.
IoT development tools support work across devices, firmware and deployment environments, so the details worth comparing can vary with your project. These entries are ranked by the list and compared on deployment targets, device simulation, firmware debugging, supported boards, languages and protocols. Free plans and paid starting prices provide additional context. Arm Keil MDK, PlatformIO IDE and Arduino IDE are among the first options, followed by tools including the ESP-IDF Extension for VS Code and MPLAB X IDE. As you review the entries, consider which boards and protocols you need to work with, whether a simulator is useful, and how each option handles debugging and deployment.
15 IoT development tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | App | Score | From | Free plan | Paid from | Supported languages | Device simulator | Firmware debugging | Supported protocols | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Arm Keil MDK | 6.4 | $99/mo | Yes | — | — | — | — | — | View |
| 2 | PlatformIO IDE | 6.4 | $20.75/mo | Yes | — | — | — | — | — | View |
| 3 | Arduino IDE | 6.3 | Free | Yes | — | — | — | — | — | View |
| 4 | ESP-IDF Extension for VS Code | 6.3 | Free | Yes | — | — | — | — | — | View |
| 5 |  MPLAB X IDE | 6.3 | Free | Yes | — | — | — | — | — | View |
| 6 | Particle Web IDE | 6.3 | $299/mo | Yes | 299 /mo | C, C++ | No | Yes | — | View |
| 7 | Wokwi | 6.2 | €5.60/mo | Yes | — | Arduino (C/C++), MicroPython, CircuitPython, Rust | Yes | Yes | WiFi, HTTP, HTTPS, WebSocket, MQTT, NTP, CoAP, DNS, TCP, UDP, UART, I2C, SPI | View |
| 8 | Eclipse 4diac | 6.0 | — | Yes | — | C++; IEC 61499 function blocks | — | Yes | OPC UA, OPC DA, HTTP, MQTT, serial (RS232), FMI, TSN, FBDK/IP, Modbus, openPOWERLINK, Arrowhead | View |
| 9 | Digi IoT Device Simulator | 5.9 | — | Yes | — | Python | Yes | — | — | View |
| 10 | Simplicity SDK | 5.9 | — | Yes | — | C; C++ | — | — | Bluetooth LE; OpenThread; Wi-Fi; proprietary wireless protocols (RAIL, Alpha integration, device-dependent) | View |
| 11 | Code Composer Studio | 5.8 | — | Yes | — | — | — | — | — | View |
| 12 | Eclipse BaSyx | 5.8 | — | Yes | — | Java, Python, TypeScript, Go, C#, Rust | — | — | OPC UA, MQTT, HTTP/REST, ActiveMQ, Kafka | View |
| 13 | e² studio | 5.7 | — | Yes | — | — | — | — | — | View |
| 14 | Renesas Flexible Software Package | 5.5 | — | Yes | — | — | — | — | — | View |
| 15 | STM32CubeIDE | 5.5 | — | Yes | — | — | — | — | — | View |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which IoT development tool is ranked first on Samsung Mobile US Press?
Arm Keil MDK is ranked #1 of 15 with a score of 6.4. PlatformIO IDE is second and Arduino IDE third.
How many of these have a free plan?
7 of the 15 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Wokwi has the lowest first paid tier we found: €5.60/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.