icsharpcode/SharpZipLib

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#ziplib is a Zip, GZip, Tar and BZip2 library written entirely in C# for the .NET platform.

Stars: 3.9k
Forks: 1k
Open beginner issues: 0
Indexed issues: 90

Dominant language: C#
License: MIT
Last GitHub push: Aug 12, 2023
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

90 open issues indexed

docs/specification/appnote.txt is non-distributable Open

*no response* bug

Difficulty 1/5 Under an hour Newbie friendliness 78/100

icsharpcode/SharpZipLib#905 · 1 comment · Opened Apr 14, 2026
BZip2InputStream: multiple crashes from malformed input Open

bug bzip2

Difficulty 4/5 3-5 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#904 · Opened Mar 15, 2026
SetLevel in ZipFile Open

enhancement zip

Difficulty 2/5 1-2 days Newbie friendliness 55/100

icsharpcode/SharpZipLib#903 · Opened Dec 23, 2025
.z file decompress throw exception, header byte 0x1f, 0x9d, 0x90,0x23, winrar and 7z tools open success. Open

*no response* bug

Difficulty 4/5 3-5 days Newbie friendliness 32/100

icsharpcode/SharpZipLib#901 · 1 comment · Opened Nov 2, 2025
Extraction of password-protected Zip files failed. Open

*no response* bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#894 · 1 comment · Opened May 14, 2025
Extract files encrypted with PKWare AES encryption Open

*no response* enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

icsharpcode/SharpZipLib#893 · Opened May 8, 2025
Trailing zeros in input file causes exception, other zip software can read Open

bug zip

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#890 · 2 comments · Opened Jan 30, 2025
Unexpected crashes in SetData method of ExtendedUnixData Open

*no response* bug zip

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

icsharpcode/SharpZipLib#887 · Opened Jan 2, 2025
Exception when reading an encrypted zip file containing a folder: "Stored, but compressed != uncompressed" Open

bug zip

Difficulty 4/5 3-5 days Newbie friendliness 38/100

icsharpcode/SharpZipLib#885 · 1 comment · 1 reaction · Opened Dec 13, 2024
Add folder, unable to decompress Open

bug zip

Difficulty 4/5 3-5 days Newbie friendliness 25/100

icsharpcode/SharpZipLib#883 · Opened Nov 14, 2024
Can't open empty file Open

bug zip

Difficulty 3/5 1-2 days Newbie friendliness 48/100

icsharpcode/SharpZipLib#879 · 2 comments · Opened Sep 19, 2024
Comments on entries does not support unicode Open

*no response* bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

icsharpcode/SharpZipLib#878 · Opened Sep 9, 2024
BZip2AsyncOutputStream Open

bzip2 enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#877 · Opened Sep 8, 2024
⚠⚠⚠ ZIP FILE CORRUPTION WHEN USING DIRECT MODE ⚠⚠⚠ Open

bug zip

Difficulty 4/5 3-5 days Newbie friendliness 38/100

icsharpcode/SharpZipLib#874 · Opened Aug 7, 2024
Password zip is inconsisent Open

*no response* bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

icsharpcode/SharpZipLib#873 · Opened Jul 24, 2024
Problem reading archives containg Zip64 files Open

bug zip

Difficulty 5/5 Over a week Newbie friendliness 25/100

icsharpcode/SharpZipLib#870 · 1 comment · Opened May 27, 2024
Add support for .NET Framework 4.6.1 to target frameworks. Open

*no response* enhancement

Difficulty 1/5 Under an hour Newbie friendliness 50/100

icsharpcode/SharpZipLib#863 · Opened May 1, 2024
Problem when create zip in network folder Open

bug zip

Difficulty 4/5 3-5 days Newbie friendliness 25/100

icsharpcode/SharpZipLib#861 · Opened Apr 11, 2024
It's not possible to tar files starting with "system" in the file name. Open

bug tar

Difficulty 3/5 1-2 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#859 · Opened Feb 8, 2024
TestArchive doesn't handle invalid offsets correctly Open

bug zip

Difficulty 3/5 1-2 days Newbie friendliness 48/100

icsharpcode/SharpZipLib#856 · 2 comments · Opened Dec 14, 2023
Original DateTime/DosTime value Open

enhancement zip

Difficulty 3/5 1-2 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#855 · Opened Nov 20, 2023
Could not load file or assembly 'System.Threading.Tasks.Extensions' or one of its dependencies Open

bug tar

Difficulty 3/5 1-2 days Newbie friendliness 30/100

icsharpcode/SharpZipLib#854 · Opened Nov 17, 2023
.NET Framework 4.6.2 Support? Open

*no response* enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#853 · Opened Oct 27, 2023
Symlink creation not possible with `TarArchive.WriteEntry()`. Open

bug tar

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

icsharpcode/SharpZipLib#850 · 1 comment · Opened Oct 16, 2023
xarchiver can't open tar files created with this library Open

bug tar

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#848 · Opened Oct 2, 2023
TAR archive has only 20kb when application high load Open

bug tar

Difficulty 4/5 3-5 days Newbie friendliness 25/100

icsharpcode/SharpZipLib#847 · Opened Sep 28, 2023
GetNextEntryAsync might use too large buffer Open

async bug tar

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

icsharpcode/SharpZipLib#845 · 3 comments · 2 reactions · Opened Sep 1, 2023
Reading deflate file throw "Unexpected EOF" Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#837 · 24 comments · Opened Jul 12, 2023
Use CompressionMethod.Stored and flush the ZipOutputStream after each entity was added leads Zip corrupted in SharpZipLib 1.4.2 Open

bug zip

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#834 · 9 comments · Opened May 23, 2023
Perf - Add buffer pooling where relevant Open

enhancement performance

Difficulty 5/5 Over a week Newbie friendliness 35/100

icsharpcode/SharpZipLib#832 · Opened Apr 25, 2023
Reading and writing in sync mode problems after update to 1.4 Open

bug gzip tar

Difficulty 4/5 3-5 days Newbie friendliness 30/100

icsharpcode/SharpZipLib#827 · 2 comments · Opened Feb 23, 2023
Async entry read causes exception when reading AES encrypted zip. Open

async bug encryption zip

icsharpcode/SharpZipLib#823 · 8 comments · 1 assignee · Opened Jan 24, 2023
`WriteEntry(TarEntry, bool)` writes the entry without bytes if the file is used by another process Open

bug tar

Difficulty 3/5 1-2 days Newbie friendliness 48/100

icsharpcode/SharpZipLib#819 · 6 comments · Opened Dec 22, 2022
Infer# Analysis Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#792 · Opened Nov 1, 2022
Support seeking for non-compressed zip file Open

enhancement zip

Difficulty 4/5 3-5 days Newbie friendliness 42/100

icsharpcode/SharpZipLib#781 · 1 comment · Opened Oct 3, 2022
SharpZipLib .FastZip.ExtractZip for zip file with 2 or more big data files ~1.5GB (which are not zip) outputs a partial result Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#729 · 11 comments · Opened Feb 21, 2022
ZipArchive.TestArchive swallows important environmental exceptions Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#724 · 1 comment · Opened Feb 15, 2022
ZipFile.TestArchive() returns true for empty file Open

bug zip

Difficulty 3/5 1-2 days Newbie friendliness 48/100

icsharpcode/SharpZipLib#723 · 2 comments · Opened Feb 13, 2022
Problem reading archives containg Zip64 files Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#698 · 9 comments · Opened Dec 16, 2021
Tar entries with unrecognized entry type codes are silently ignored Open

enhancement tar

Difficulty 3/5 1-2 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#697 · 4 comments · Opened Dec 9, 2021
FastZip.CreateZip crashes when used with certain buggy Directory enumeration on .NET 5 Open

enhancement zip

Difficulty 4/5 3-5 days Newbie friendliness 25/100

icsharpcode/SharpZipLib#676 · 1 comment · Opened Oct 14, 2021
Cannot read a zip embedded in a zip Open

documentation zip

Difficulty 3/5 1-2 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#662 · 3 comments · Opened Sep 17, 2021
Adding to .zip archive removes file system access rules Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#654 · 12 comments · Opened Aug 17, 2021
Zip file entries with backslashes does not get converted to slashes on nix platforms in FastZip.Extract Open

icsharpcode/SharpZipLib#617 · 7 comments · 1 assignee · Opened Apr 29, 2021
ZipOutputStream is not support BZip2 Open

enhancement zip

Difficulty 3/5 1-2 days Newbie friendliness 42/100

icsharpcode/SharpZipLib#615 · 3 comments · Opened Apr 28, 2021
BZip2InputStream.Length reports an incorrect length Open

bzip2 core stream

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

icsharpcode/SharpZipLib#612 · 3 comments · Opened Apr 20, 2021
Store ZipFile entries in dictionary for faster lookup Open

enhancement zip

Difficulty 4/5 3-5 days Newbie friendliness 35/100

icsharpcode/SharpZipLib#608 · 1 comment · Opened Apr 7, 2021
ZipEntry does not support special characters by default since 1.1.0 Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

icsharpcode/SharpZipLib#591 · 4 comments · Opened Mar 5, 2021
InflaterInputStream doesn't reset position of underlying stream to end of deflated data Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

icsharpcode/SharpZipLib#584 · 2 comments · Opened Feb 22, 2021
.net core zip+aes ReadAsync failed on one of files Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

icsharpcode/SharpZipLib#572 · 5 comments · Opened Feb 11, 2021

icsharpcode/SharpZipLib

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