Fly.io
Run web, AI, & app servers close to your users on CPUs and GPUs. Deploy and scale your app in minutes at https://fly.io/
53 employees · est. 2017 · Chicago, United States
F5 is the older company (2000 vs 2017); F5 is the larger of the two.
Side-by-Side Comparison
| Metric | F5 | Fly.io |
|---|---|---|
| Founded | ||
| Founded | 2000 older | 2017 |
| Headquarters | ||
| Headquarters | Seattle, United States | Chicago, United States |
| Employees | ||
| Employees | 6150 larger | 53 |
| Industry | ||
| Industry | Not tracked yet | IT, Internet |
| Funding Stage | ||
| Funding Stage | IPO | Series C |
| Total Funding | ||
| Total Funding | $30.00M | $110.50M |
| Funding Rounds | ||
| Funding Rounds | 4 | 5 |
| Services | ||
| Services | AI Security, Edge Distribution, Service Providers, Unified Management, API Gateway | Fly Machines, Managed Postgres, Phoenix.new, Private Networking, Autoscaling, Zero Downtime Deploys, Granular Routing, Monitoring |
| Target Customers | ||
| Target Customers | Banking and Financial Services, E-commerce, Healthcare, Public Sector, Technology Companies, Manufacturing, Telecommunications | Developers, Software Teams, Enterprises, JavaScript Developers, Teams using Cockroach DB, Postgres |
| Taxonomy | ||
| Taxonomy | Application Delivery, Load-balancing, Web Acceleration, WAN Optimization, High Availability, SSL VPN, Network Traffic Management, DDoS Protection, Application Availability, WAF (Web Application Firewall), Application Security, Identity & Access Management | Application Delivery Network, Web Servers, AI Servers, App Servers, CPUs, GPUs, Middleware, Backend Applications, JavaScript, Serverless, Edge Computing, Content Delivery Network, Deployment, Scalability, Network Of Servers |
| Website | ||
| Website | f5.com | fly.io |
About F5
F5, Inc. (NASDAQ: FFIV) is a global leader in application delivery and security, based in the United States. Founded in 2000, it leverages three decades of expertise to provide comprehensive solutions via its marquee platform—the F5 Application Delivery and Security Platform (ADSP). This platform en...
About Fly.io
Fly.io, founded in 2017, is a United States-based startup operating in the IT and Internet industries. The company has positioned itself as a key player in enabling developers to run web, AI, and app servers closer to their users by utilizing both CPUs and GPUs. The platform allows for streamlined d...
We will tell you when either one moves
BounceWatch watches F5 and Fly.io for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at F5 and Fly.io — by email.
Frequently Asked Questions
Compare F5 with someone else
Start typing a company name or domain.
Related Comparisons
Compiled from the BounceWatch company index. We last looked at F5 on 9 May 2026, and Fly.io on 19 Dec 2025. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.