Free and open first
Best Sdk in 2026
- 20 apps
- Research read 7 Oct 2026
- How the order is worked out
- 1
RevenueCat
Free plan Open source AndroidAPIiPhone+2Choose RevenueCat if your app needs purchase and subscription management, configurable paywalls, or purchase analytics across platforms.
- 2
Epic Online Services
Free plan AndroidAPIiPhone+4Epic Online Services groups social, multiplayer, data, and safety tools for game development, with a free plan and several SDK platforms.
- 3
- 4
Meta Business Suite
by Meta Business SuiteFree plan AndroidiPhoneWebChoose Meta Business Suite if you manage business activity on Facebook and Instagram and want publishing, messaging, and insights together.
- 5
Oracle Cloud Infrastructure Container Registry
Free plan APILinuxWeb - 6
Steamworks
Free plan APILinuxMac+1Choose Steamworks if you plan to distribute a game or software product through Steam and want access to its portal, APIs, and optional game services.
- 7
Apple Simulator
Free plan MacApple Simulator brings device simulation, debugging, network simulation, snapshots, and automation access to Mac-based development. It is free, but the listed host platform is limited to macOS.
- 8
Firebase SDKs
Free plan AndroidiPhoneWeb - 9
Stream SDKs
Free plan AndroidiPhoneLinux+3 - 10
Plaid
Free trial AndroidAPIiPhone+1Choose Plaid if your app or service needs financial account connections, financial data, or bank payment processing across its listed products.
- 11
Google Cloud Client Libraries
Free plan Web - 12
NVIDIA CUDA Toolkit
Free plan LinuxWindows - 13
OpenTelemetry SDK
Free plan - 14
Windows SDK
Free plan Windows - 15
Agora SDKs
Paid AndroidiPhoneLinux+3 - 16
Datadog APM
Paid AndroidiPhoneWeb - 17
Azure SDKs
Paid AndroidiPhoneLinux+3 - 18
HID SDK
Paid AndroidLinuxWindows - 19
OpenJAUS SDK
Paid LinuxWindows - 20
Unified Automation OPC UA SDKs
Paid LinuxWindows
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price