FREEDOM251

Freedom251 › IT & Infrastructure

Free and open first

Best Application Performance & Observability - Enterprise Software in 2026

  1. 1

    AppStatus

    Free plan APILinuxMac+2

    AppStatus combines service monitoring, host telemetry, alerting and status pages, with incident analysis and security controls also listed.

    7.7 Free plan · paid from $6/mo (annual) · 14-day trial Visit site
  2. 2

    Embrace

    Free plan AndroidAPIExtension+2

    Embrace links mobile and web performance signals with user sessions and supports data forwarding through OpenTelemetry interfaces.

    7.4 Free plan · paid from $0.80 · 30-day trial Visit site
  3. 3

    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
  4. 4

    Honeycomb

    Free plan AndroidAPIiPhone+2

    Honeycomb combines telemetry ingestion with investigation tools for tracing and related data. Free has stated monthly data allowances; larger deployments can consider Pro or custom Enterprise plans.

    7.3 Free plan · paid from $150/mo Visit site
  5. 5

    groundcover

    by groundcover
    Free plan LinuxSelf-hostedWeb

    groundcover combines eBPF-based telemetry collection with cloud and on-premises deployment options. Compare the retention, support, and per-host plan details with your monitoring needs.

    7.2 Free plan · paid from $30/mo Visit site
  6. 6

    Middleware

    Free plan AndroidAPIExtension+5

    Middleware covers a broad set of monitoring and observability products, with a free plan and a usage-billed option. Check the plan limits and retention period against your needs.

    7.2 Free plan · paid from $0.30 · 14-day trial Visit site
  7. 7

    OpenSearch

    by OpenSearch
    Free plan APILinuxMac+3

    OpenSearch provides a free search and analytics suite with ingestion, visualization, and machine-learning capabilities.

    7.1 Open source Visit site
  8. 8

    SigNoz

    Free plan AndroidAPIiPhone+2

    SigNoz brings monitoring signals, querying, alerting, dashboards, and tracing into one observability tool.

    7.0 Free plan · paid from $49/mo · 30-day trial Visit site
  9. 9

    Elastic APM

    Free plan LinuxMacWeb+1
    6.7 Free plan · 14-day trial Visit site
  10. 10

    OpenObserve

    Free plan Web

    OpenObserve brings pipeline processing, parsing, live viewing and archive export together for log work.

    6.7 Free plan · pricing on request Visit site
  11. 11

    Scout APM

    Free plan APIWeb

    Pick Scout APM if your team wants application monitoring that combines performance data, errors, and alerts, with agents for its listed languages.

    6.7 Free plan · paid from $19/mo · 14-day trial Visit site
  12. 12

    Automic Continuous Delivery Automation

    Free trial APILinuxSelf-hosted+1
    6.5 Pricing on request Visit site
  13. 13

    ManageEngine Applications Manager

    Free plan AndroidiPhoneLinux+2

    Applications Manager offers tracing, mapping, real user monitoring and log correlation in a hybrid product.

    6.5 Free plan · paid from $395/yr · 30-day trial Visit site
  14. 14

    eG Enterprise

    Free trial LinuxSelf-hostedWeb+1

    Choose eG Enterprise if you need monitoring across applications and infrastructure, including transaction tracing and user-experience analysis.

    6.4 From $100/mo · 21-day trial Visit site
  15. 15

    FusionReactor

    Free trial APILinuxMac+3

    Choose FusionReactor if you need detailed monitoring and profiling for Java or ColdFusion applications, with on-premise deployment or OpenTelemetry export.

    6.3 From $22/mo · 14-day trial Visit site
  16. 16

    Coralogix APM

    Free trial APIWeb

    Coralogix APM combines OpenTelemetry-based monitoring with service maps, profiling, and connections between traces and logs.

    6.2 From $0.16 · 14-day trial Visit site
  17. 17

    New Relic APM

    Free plan Web

    Choose New Relic APM if you want web-based monitoring with tracing, dependency mapping, real user monitoring, and log correlation.

    5.9 Free plan · paid from $10/user/mo Visit site
  18. 18

    SolarWinds Observability

    Free trial APILinuxSelf-hosted+2

    SolarWinds Observability covers multiple monitoring domains in one service, with deployment choices and integrations for common application and database technologies.

    5.8 From $8/mo (annual) · 30-day trial Visit site
  19. 19
    5.7 Free plan Visit site
  20. 20

    Sentry Session Replay

    Free plan AndroidiPhoneWeb
    5.7 Free plan · paid from $26/mo Visit site
  21. 21

    Datadog APM

    Paid AndroidiPhoneWeb
    5.2 From $31/mo (annual) · 14-day trial Visit site
  22. 22

    Dynatrace Infrastructure Monitoring

    Paid LinuxWebWindows

    Dynatrace offers infrastructure monitoring with separate plans for discovery, infrastructure analysis, and full-stack monitoring.

    5.2 From $29/mo · 15-day trial Visit site
  23. 23
    4.7 Pricing on request · 14-day trial Visit site
  24. 24
    4.6 From $0.03 · 14-day trial Visit site
  25. 25
    4.2 From $0.01 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 IT & Infrastructure