OSS-Fuzz comparisons
OSS-Fuzz is compared head-to-head with Mayhem, ClusterFuzz and AFL++ and more: 7 head-to-heads in Fuzz Testing Software, each with the specs and prices we checked.
OSS-Fuzz head-to-head
- OSS-Fuzz vs Mayhem
- OSS-Fuzz vs ClusterFuzz
- OSS-Fuzz vs AFL++
- OSS-Fuzz vs EvoMaster
- OSS-Fuzz vs FuzzForge
- OSS-Fuzz vs Jazzer
- OSS-Fuzz vs syzkaller
OSS-Fuzz vs each of them
| # | Tool | Free plan | Paid from | Input generation methods | Target types | Coverage guidance | Crash triage | Score |
|---|---|---|---|---|---|---|---|---|
| 2 | OSS-Fuzz | Yes | Free | mutation | source-code fuzz targets; untrusted user or network inputs; complex input formats | Yes | Yes | 9.2 |
| 1 | Mayhem | hybrid | Linux binaries; Windows PE binaries; TCP/UDP applications; REST APIs; gRPC APIs; containers; automotive vECUs | Yes | Yes | 9.4 | ||
| 3 | ClusterFuzz | Free | mutation, generation, hybrid | binary formats, HTML, JavaScript, browser DOM, native programs | Yes | Yes | 8.9 | |
| 4 | AFL++ | Yes | Free | mutation | source-code targets, binary-only targets, file inputs, stdin inputs, Android native libraries, Win32 PE binaries | Yes | Yes | 8.7 |
| 5 | EvoMaster | Yes | Free | 8.5 | ||||
| 6 | FuzzForge | Yes | generation | codebases, binaries, containers, APIs, GraphQL, protocols, firmware, embedded systems | Yes | 8.3 | ||
| 7 | Jazzer | Yes | Free | mutation, generation | JVM applications, Java, Kotlin, Scala, Clojure, JNI/native libraries | Yes | Yes | 8.2 |
| 8 | syzkaller | Free | generation, mutation | operating-system kernels and syscall interfaces: FreeBSD, Fuchsia, gVisor, Linux, NetBSD, OpenBSD, Windows | Yes | Yes | 8.1 |
Compare OSS-Fuzz with any fuzz testing tool
These are the matchups our editors wrote up. The compare tool pairs OSS-Fuzz with any other product in Fuzz Testing Software — and up to four at once — from the same checked specs.
Compare OSS-Fuzz with any tool side by side →
Every fuzz testing software head-to-head →
Our full OSS-Fuzz verdict, pricing and fact sheet →
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Compared by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update