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Tags / Testing /

Fuzzing

Tool that feeds generated or mutated inputs to a program to find crashes or bugs.

The 16repositories with this Tag gained +980 net stars in the last 30 days, 46% more than the 30 days before.

1 created in the last 90 days · 3 published a release in the last 30 days · 93K stars in total

All in the Repository Index On Trending

Net stars each day, last 30 days+223 last 7 days

Oct 5, 2026Nov 3, 2026

  • Seed Dataset
  • Rising Admissions

Most net stars, last 30 days

google/oss-fuzz

OSS-Fuzz - continuous fuzzing for open source software.

+229

23% of the net stars of this Tag

Largest Pace, last 30 days

No other repository gained 2 or more times the net stars of the 30 days before.

Most stars, created in the last 90 days

assetnote/h3fuzz

Content discovery and fuzzing with HTTP/3 support (100k requests per second)

138

stars in total · created 23 days ago

Where the stars went, last 13 weeks

Net stars gained each week. The repositories that gained the most have their own color.

ffuf/ffuf gained 25% of the net stars of this Tag in the last 13 weeks.

ffuf/ffuf, week to Aug 11: +42 net starsgoogle/oss-fuzz, week to Aug 11: +57 net starsHypothesisWorks/hypothesis, week to Aug 11: +21 net starsschemathesis/schemathesis, week to Aug 11: +12 net starsAFLplusplus/AFLplusplus, week to Aug 11: +15 net starsAll other repositories, week to Aug 11: +36 net starsffuf/ffuf, week to Aug 18: +34 net starsgoogle/oss-fuzz, week to Aug 18: +25 net starsHypothesisWorks/hypothesis, week to Aug 18: +41 net starsschemathesis/schemathesis, week to Aug 18: +19 net starsAFLplusplus/AFLplusplus, week to Aug 18: +18 net starsAll other repositories, week to Aug 18: +35 net starsffuf/ffuf, week to Aug 25: +46 net starsgoogle/oss-fuzz, week to Aug 25: +20 net starsHypothesisWorks/hypothesis, week to Aug 25: +17 net starsschemathesis/schemathesis, week to Aug 25: +23 net starsAFLplusplus/AFLplusplus, week to Aug 25: +13 net starsAll other repositories, week to Aug 25: +23 net starsffuf/ffuf, week to Sep 1: +42 net starsgoogle/oss-fuzz, week to Sep 1: +25 net starsHypothesisWorks/hypothesis, week to Sep 1: +22 net starsschemathesis/schemathesis, week to Sep 1: +19 net starsAFLplusplus/AFLplusplus, week to Sep 1: +10 net starsAll other repositories, week to Sep 1: +31 net starsffuf/ffuf, week to Sep 8: +38 net starsgoogle/oss-fuzz, week to Sep 8: +21 net starsHypothesisWorks/hypothesis, week to Sep 8: +22 net starsschemathesis/schemathesis, week to Sep 8: +15 net starsAFLplusplus/AFLplusplus, week to Sep 8: +9 net starsAll other repositories, week to Sep 8: +23 net starsffuf/ffuf, week to Sep 15: +40 net starsgoogle/oss-fuzz, week to Sep 15: +19 net starsHypothesisWorks/hypothesis, week to Sep 15: +22 net starsschemathesis/schemathesis, week to Sep 15: +15 net starsAFLplusplus/AFLplusplus, week to Sep 15: +9 net starsAll other repositories, week to Sep 15: +32 net starsffuf/ffuf, week to Sep 22: +30 net starsgoogle/oss-fuzz, week to Sep 22: +17 net starsHypothesisWorks/hypothesis, week to Sep 22: +34 net starsschemathesis/schemathesis, week to Sep 22: +19 net starsAFLplusplus/AFLplusplus, week to Sep 22: +14 net starsAll other repositories, week to Sep 22: +28 net starsffuf/ffuf, week to Sep 29: +79 net starsgoogle/oss-fuzz, week to Sep 29: +21 net starsHypothesisWorks/hypothesis, week to Sep 29: +32 net starsschemathesis/schemathesis, week to Sep 29: +22 net starsAFLplusplus/AFLplusplus, week to Sep 29: +12 net starsAll other repositories, week to Sep 29: +43 net starsffuf/ffuf, week to Oct 6: +58 net starsgoogle/oss-fuzz, week to Oct 6: +19 net starsHypothesisWorks/hypothesis, week to Oct 6: +27 net starsschemathesis/schemathesis, week to Oct 6: +11 net starsAFLplusplus/AFLplusplus, week to Oct 6: +10 net starsAll other repositories, week to Oct 6: +37 net starsffuf/ffuf, week to Oct 13: +56 net starsgoogle/oss-fuzz, week to Oct 13: +46 net starsHypothesisWorks/hypothesis, week to Oct 13: +28 net starsschemathesis/schemathesis, week to Oct 13: +16 net starsAFLplusplus/AFLplusplus, week to Oct 13: +19 net starsAll other repositories, week to Oct 13: +29 net starsffuf/ffuf, week to Oct 20: +45 net starsgoogle/oss-fuzz, week to Oct 20: +23 net starsHypothesisWorks/hypothesis, week to Oct 20: +17 net starsschemathesis/schemathesis, week to Oct 20: +19 net starsAFLplusplus/AFLplusplus, week to Oct 20: +19 net starsAll other repositories, week to Oct 20: +42 net starsffuf/ffuf, week to Oct 27: +40 net starsgoogle/oss-fuzz, week to Oct 27: +59 net starsHypothesisWorks/hypothesis, week to Oct 27: +17 net starsschemathesis/schemathesis, week to Oct 27: +31 net starsAFLplusplus/AFLplusplus, week to Oct 27: +16 net starsAll other repositories, week to Oct 27: +109 net starsffuf/ffuf, week to Nov 3: +28 net starsgoogle/oss-fuzz, week to Nov 3: +99 net starsHypothesisWorks/hypothesis, week to Nov 3: +18 net starsschemathesis/schemathesis, week to Nov 3: +24 net starsAFLplusplus/AFLplusplus, week to Nov 3: +23 net starsAll other repositories, week to Nov 3: +31 net stars

Compare growth

6 of 16 repositories: The newest GitHub release is more than 180 days old. A repository that never published a release is not in this list. Select a column name to change the order.

#RepositoryStarsGained, 30 daysPace
1s0md3v/XSStrike

Most advanced XSS scanner.

15K+49–
2google/honggfuzz

Security oriented software fuzzer. Supports evolutionary, feedback-driven fuzzing based on code coverage (SW and HW based)

3.4K+18–
3microsoft/onefuzzarchived

A self-hosted Fuzzing-As-A-Service platform

2.8K+2–
4jtpereyda/boofuzz

A fork and successor of the Sulley Fuzzing Framework

2.4K+12–
5sqlancer/sqlancer

Automated testing to find logic and performance bugs in database systems

1.8K+17–
6typelift/SwiftCheck

QuickCheck for Swift

1.4K0–

Faster than the 30 days before

Net stars of the last 30 days are 2 or more times those of the 30 days before.

No repository with this Tag meets this rule now.

Slower than the 30 days before

Net stars of the last 30 days are 50% or less of those of the 30 days before.

No repository with this Tag meets this rule now.

New in the last 90 days

Created on GitHub in the last 90 days.

  1. assetnote/h3fuzz+139 · 23 days ago

Older than 2 years, still releasing

Created more than 2 years ago, with a push in the last 7 days and a GitHub release in the last 30 days.

  1. HypothesisWorks/hypothesis9.1K · release 5 days ago
  2. schemathesis/schemathesis3.7K · release 2 days ago

Last release more than 180 days ago

The newest GitHub release is more than 180 days old. A repository that never published a release is not in this list.

  1. s0md3v/XSStrike15K · release last year
  2. google/honggfuzz3.4K · release 2 years ago
  3. microsoft/onefuzz2.8K · release 3 years ago
  4. jtpereyda/boofuzz2.4K · release 3 years ago
  5. sqlancer/sqlancer1.8K · release 4 years ago
All 6 in the table

Top GitHub topics with this Tag

Primary languages

How a repository gets this Tag

An agent reads the description, the GitHub topics, and the start of the README of each repository. It chooses Tags only from the Tag list in the AwesomeRepos source code. For each Tag, it quotes the text. A code check keeps the Tag only when the quote is in that text. The page of each repository shows the quote of each of its Tags. A Tag does not rank repositories. It does not say that one repository can replace another. To report a wrong Tag, use "Report a problem with this page" on the page of the repository.

How the numbers are counted

All numbers come from the Star History of the repositories that have the Tag now. A period is a run of complete UTC days. All numbers on this page count only the repositories that AwesomeRepos shows in lists. A machine computes them each hour.

For each repository, a period counts only when Star History has each of its days, or when the repository was created in the period. Otherwise the table shows "–". The bars of a week with no complete data are grey.

The Pace is the net stars of a period divided by the net stars of the period before. It shows only when Star History covers each day of the period before, with at least 3 net stars a day on average.

The chart at the top adds up the net stars of all the repositories with the Tag. The darker area is the part from the Seed Dataset; the rest is from rising Admissions. A rising Admission comes into the Repository Index because it gained stars quickly. Its Star History before its Admission comes from the Repository Host. Thus the days before many rising Admissions are higher than they were for the repositories in the index at that time. The repositories of the Seed Dataset are a set that does not change.

The releases are the GitHub releases of each repository. The lists and the table do not rank repositories, and they do not say that one repository can replace another.