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Open Source Application Performance Management Software (2026)
Last updated: March 2026
22 software options
Sponsored
New Relic
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Performance testing and monitoring
Sign up for free access with our perpetual free tier and 100 GB/month of data ingest included.
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Site24x7
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
All-in-one performance monitoring tool for DevOps and IT
Get Started with a 30-day free trial. No Credit Card required. Pricing options are available in Yearly, Monthly and Hourly models. STARTER Best suited for small teams. $9/mo PRO Best suited for medium sized teams. $35/mo ENTERPRISE Best suited for enterprises. $225/mo
Read more about Site24x7
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open source software for IT infrastructure components
Zabbix Cloud is offered across seven pricing plans, starting at $50/month. A 30 free trial is also available. Please contact Zabbix for detaild pricing information.
Read more about Zabbix
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based website monitoring software
Oh Dear's pricing is transparent: you simply pay for the amount of websites you want to monitor. All of our plans - the smallest and the biggest - have access to all features and settings. We don't hide any security toggles behind an Enterprise plan. Every user has access to every feature.
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Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Track exceptions with modern error logging
Sentry offers the following pricing plans: Developer: Free Team: $26/month billed annually Business: $80/month billed annually Enterprise: Contact Functional Software for pricing details
Read more about Sentry
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Monitor Your Entire Infrastructure
Icinga Monitoring is open source and free to use. Annual subscriptions are available for official Icinga support plans and certain operating system specific packages (AL, RHEL, SLES). Contact Icinga for pricing details.
Read more about Icinga
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Enterprise Infrastructure Monitoring & Alerting Platform
Nagios XI's plans are primarily based on the Node-count of the license. A Node is anything with an IP address or Fully Qualified Domain Name (FQDN) that you would like to monitor (switches, routers, firewalls, workstations, and other network devices). There are no restrictions on the number of Services you can monitor. While paid licenses of Nagios XI do not contain any software-imposed limitations, we have found that systems performing more than 15,000-20,000 checks in a 5-minute interval should consider following our Server Considerations Guide to ensure the best performance on your installation. Nagios XI also offers an Enterprise add-on which enhances the software's capabilities. This addition allows users to schedule reports, project future values with capacity planning, and much more. Refer to our Enterprise documentation or contact a Nagios sales representative to learn more about the capabilities of the Enterprise-level license. With the purchase of a Nagios XI license, you receive access to Premium Features as part of your Maintenance & Support benefits for the first year. After the first year, renewal of your Maintenance & Support plan is required to maintain this feature set. This includes features such as Single-Sign On (SSO) via MS Azure AD, the Nagios Mod-Gearman user interface, and a collection of premium wizards! To learn more and see the full list of features, you can visit our article on Premium Features or contact Nagios sales.
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Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
A systems and cloud infrastructure automation framework
Contact Chef for pricing information.
Read more about Chef Enterprise Automation Stack
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Scalable Application Metrics
We offer everything from small plans for individual developers to gargantuan plans for Fortune 500 companies sending millions of metrics every month. If you're currently running Graphite at scale, we can help - we collect millions of metrics and billions of datapoints a day.
Read more about Hosted Graphite
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Application creation and hosting
Read more about OpenShift
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Detect and diagnose crashes in your applications
Startup $29/ month 5 Users 5 Projects 3 months historical data Growth $99/ month 15 Users Infinite Projects 6 months historical data Professional $249/ month 30 Users Infinite Projects 6 months historical data
Read more about BugSnag
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open source network management application
OpenNMS is available for free and on a subscription basis. Please contact The OpenNMS Group for pricing details.
Read more about OpenNMS
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Network graphing RRDTool
Cacti is an open source platform, users are encouraged to donate via the website.
Read more about Cacti
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open-source feature management platform
Unleash fits your language, your hosting needs, your work process, your business, and your budget. Unleash offers 3 pricing editions: ◼Open Source - it's a FREE and basic feature management solution hosted by you. ◼Pro - 80$/month includes 5 team members. Your team gets access to the full version managed by us. ◼Enterprise - Contact us. Includes SSO, unlimited team members, managed by us or Self-hosted. No credit card is required and the first 14 days are free. Pricing info: getunleash.io/plans
Read more about Unleash
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Test management platform with intelligent automation
Contact QMetry Inc. for pricing details.
Read more about QMetry
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Automated and on-demand performance testing for developers.
Monthly Subscriptions: 250 concurrent users, 5 tests per month - $0/month; 1000 concurrent users, 30 tests per month - $299/month; 3000 concurrent users, unlimited testing - $699/month; 8000 concurrent users, unlimited testing - $1299/month; +8000 concurrent users, unlimited testing - Request quote Pay-per-test: Purchase a test whenever the need arises. Price is based on test size and duration, and starts at $1.
Read more about k6.io
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
The all-in-one APM for teams of all sizes and scale.
AppSignal plans start at $23 per month, with custom options available for larger teams or specific needs. Every plan includes: - Unlimited apps and hosts - Access to all core features, regardless of plan size - 30-day trace retention for reliable performance insights - 1GB of log storage included, with additional storage available at $10 per 10GB - Expert support included as standard Optional add-ons are available for SAML SSO, long-term log storage, and HIPAA compliance. Save 10% with an annual plan. AppSignal offers simple, predictable pricing that scales with your team.
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Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open-source feature flag & remote configuration solution
Flagsmith has a free forever plan that has unlimited Feature Flags, unlimited environments, and unlimited identities and segment. It scales up to 50,000 API calls per month. Paid plans scale as you do based on API calls and team members. Free - $0; Start-Up - $45; Scale-Up - $200; Enterprise - Contact Us!
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