FREEDOM251

Freedom251 › Developer Tools

Free and open first

Best Profiling Software in 2026

Profiling software helps developers investigate application behavior across CPU, memory, and thread activity. Compare those capabilities with profiling modes and supported languages to judge how the tools align with your code and the questions you need to answer. The entries include Grafana Cloud Application Observability, Scalene, and Pyroscope. Deployment model can shape how a tool fits your environment, while free-plan availability and paid-from pricing add cost considerations. Weigh the listed profiling areas and language support together with these practical details when considering which options suit your development work.

  1. 1

    Amazon CodeGuru Profiler

    Free plan APILinuxSelf-hosted+1

    Choose Amazon CodeGuru Profiler for supported Java, JVM, or Python applications when continuous profiling, flame graphs, and method recommendations fit the work.

    7.7 From $0.01 · 90-day trial Visit site
  2. 2

    Blackfire.io

    Free plan APIExtensionLinux+3

    Choose Blackfire.io if you need profiling and performance analysis for PHP or Python across application stages, with pipeline integrations.

    7.6 From €33.25/mo (annual) Visit site
  3. 3

    async-profiler

    Free plan APILinuxMac

    async-profiler covers several Java performance targets and provides multiple ways to inspect results. Check its build requirements if you plan to build it yourself rather than use an official build.

    7.5 Free plan Visit site
  4. 4

    Google Cloud Profiler

    Free plan APILinuxSelf-hosted+1

    Cloud Profiler provides production CPU and memory profiles with source-code attribution and a console for analysis. Check language-specific availability, retention, and quotas against your needs.

    7.5 Free plan Visit site
  5. 5

    Grafana Cloud Application Observability

    Free plan AndroidAPIExtension+5

    Grafana Cloud Application Observability brings several telemetry types and service-level views together for application investigation.

    7.4 Free plan · paid from $0.03 Visit site
  6. 6

    Javadoc

    Free plan LinuxMacWeb+1

    Javadoc provides standard HTML documentation generation alongside options for custom output. Review output safety and the terms that apply to later JDK updates.

    7.4 30-day trial Visit site
  7. 7

    GNU gprof

    Free plan LinuxSelf-hosted

    Choose GNU gprof when you need flat profiles, call graphs, or annotated source for a program built with profiling enabled.

    7.3 Open source Visit site
  8. 8

    Intel VTune Profiler

    Free plan LinuxSelf-hostedWindows

    VTune Profiler brings code hotspots, hardware analysis, and memory investigation into a free profiling tool.

    7.3 Free plan Visit site
  9. 9

    Node.js --prof

    Free plan LinuxMacSelf-hosted+1

    Node.js --prof provides a focused, free route to sampling-based CPU profiling, with a separate option for processing its output.

    7.2 Free plan Visit site
  10. 10

    Parca

    Free plan APILinuxSelf-hosted+1

    Parca provides self-hosted profile collection and query tools, with web and Grafana visualization options. Before using its Agent, account for the Linux kernel and privileged-access requirements.

    7.2 Open source Visit site
  11. 11

    Scalene

    Free plan ExtensionLinuxMac+2

    Scalene combines detailed Python profiling with multiple interfaces and optional AI optimization proposals.

    7.0 Open source Visit site
  12. 12

    py-spy

    Free plan LinuxMacWindows

    py-spy provides several ways to inspect running Python programs, with multiple output formats and child-process support.

    6.9 Open source Visit site
  13. 13

    YourKit Java Profiler

    Free plan APILinuxMac+2

    YourKit combines CPU and memory analysis with inspections, database and HTTP visibility, and remote profiling. Confirm the support tier for your target operating system before choosing a license.

    6.9 From $99/user/yr · 15-day trial Visit site
  14. 14

    YourKit .NET Profiler

    Free plan APILinuxMac+1

    YourKit .NET Profiler combines CPU and memory analysis with remote profiling and automation options. Check that its supported runtimes and licensing plan fit your application and team.

    6.9 From $99/user/yr · 15-day trial Visit site
  15. 15

    Go pprof

    Free plan API

    Go pprof brings runtime profiling, live profile endpoints, and command-line visualization together for Go programs.

    6.8 Free plan Visit site
  16. 16

    Grafana Alerting

    Free plan LinuxMacWeb+1
    6.8 Free plan · paid from $20/user Visit site
  17. 17

    Valgrind

    Free plan AndroidLinuxMac

    Valgrind provides a broad set of free tools for memory checks, thread analysis, and profiling.

    6.8 Open source Visit site
  18. 18

    VisualVM

    Free plan LinuxMacWindows

    VisualVM brings monitoring, profiling, and several diagnostic tools together for Java troubleshooting at no cost.

    6.8 Free plan Visit site
  19. 19

    Pyroscope

    Free plan LinuxMacWeb+1

    Pyroscope offers application profiling across a broad list of languages and includes a free tier. Pro adds a $19/mo platform fee, with additional usage billed separately.

    6.5 Free plan · paid from $19/mo Visit site
  20. 20

    JetBrains dotMemory

    Free trial APILinuxMac+2

    dotMemory provides focused .NET memory analysis through desktop, IDE, and command-line workflows. Verify operating-system dump limits and subscription scope before choosing a plan.

    6.3 30-day trial Visit site
  21. 21

    JetBrains dotTrace

    Free trial APILinuxMac+2

    dotTrace combines detailed .NET profiling with IDE, remote, CI, and SDK workflows. The 30-day trial is accessible, but ongoing use requires dotUltimate or the All Products Pack.

    6.2 Visit site
  22. 22

    JProfiler

    Free trial APILinuxMac+2

    Choose JProfiler if you need detailed JVM profiling across CPU, memory, database, HTTP, or container workloads, with remote connections and IDE integrations.

    6.2 Visit site
  23. 23

    Polar Signals Cloud

    Free trial APILinuxSelf-hosted+1

    Polar Signals Cloud combines hosted profile analysis with agent-based collection, editor integrations and broad language support.

    6.0 From $50/mo · 14-day trial Visit site
  24. 24

    KCachegrind

    Free plan Linux
    5.7 Free plan Visit site
  25. 25

    .NET Memory Profiler

    Free trial Windows

    A focused Windows profiler for .NET memory investigation, with snapshot analysis and options for production processes and automated tests.

    5.7 From $189 · 7-day trial Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

More in Developer Tools