Apache Tomcat
open-source
Open-source Java servlet container and web server for deploying Java-based web applications.
Best application server software for MSPs in 2026
MSPs evaluating application server software are usually running it on behalf of several clients at once, so per-client separation, predictable cost at volume, and access control that keeps one customer's data out of another's view matter more than single-team feature depth.
No product in this category matches the MSP filter yet, so all 8 are listed below.
Back to all Application Server Software tools, or browse the full software directory. You can also run head-to-head comparisons or read about our review methodology.
For background on scoring, see how rankings work. Our editorial articles add deeper analysis, the glossary clarifies vendor terminology, and our calculators help estimate ROI before the shortlist narrows further.
All application server software
Nothing in this category met the MSP filter, so the full application server software category is listed here instead.
GlassFish
open-source
Open-source Jakarta EE-compliant application server for enterprise Java workloads.
Gunicorn
open-source
Python WSGI HTTP server for running Django and Flask applications in production.
Microsoft IIS
subscription
Windows-native web server for hosting ASP.NET, PHP, and static sites with deep Windows Server integration.
Nginx
freemium
High-performance web server, reverse proxy, and load balancer with a commercial Plus tier.
Puma
open-source
Concurrent Ruby HTTP server designed for speed and parallelism in Rails and Rack applications.
Uvicorn
open-source
Lightning-fast ASGI server for Python async frameworks like FastAPI and Starlette.
WildFly
open-source
Open-source Jakarta EE application server, the community upstream of Red Hat JBoss EAP.
Common questions about application server software for MSPs
What application server software capabilities do MSPs need?
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Clean separation between client workloads, role-based access that prevents cross-client visibility, pricing that stays predictable as client count grows, and reporting an MSP can hand to a customer without rebuilding it by hand.
How should MSPs evaluate application server software pricing?
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Model the cost per client rather than the headline rate, since usage-based pricing in this category can move sharply with data volume or node count. Check minimum commitments and what happens at renewal once several clients sit on one contract.
Can MSPs use the same application server software as internal IT teams?
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Often yes, since the underlying capability is the same. The difference is operational: an MSP needs separate environments or projects per client and access control that holds that separation, which internal-only deployments never have to prove.