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JuliaIO

69 indexed repositories · View on GitHub

JLD2.jl
HDF5-compatible file format in pure Julia

Julia · 640 stars
HDF5.jl
Save and load data in the HDF5 file format from Julia

Julia · 411 stars
JSON.jl
JSON parsing and printing

Julia · 360 stars
MAT.jl
Julia module for reading MATLAB files

Julia · 293 stars
JLD.jl
Saving and loading julia variables while preserving native types

Julia · 283 stars
FileIO.jl
Main Package for IO, loading all different kind of files

Julia · 228 stars
ProtoBuf.jl
Julia protobuf implementation

Julia · 221 stars
BSON.jl

Julia · 162 stars
Zarr.jl

Julia · 140 stars
Suppressor.jl
Julia macros for suppressing and/or capturing output (STDOUT), warnings (STDERR) or both streams at the same time.

Julia · 136 stars
VideoIO.jl
Reading and writing of video files in Julia via ffmpeg

Julia · 135 stars
DiskArrays.jl

Julia · 133 stars
EzXML.jl
XML/HTML handling tools for primates

Julia · 129 stars
Parquet.jl
Julia implementation of Parquet columnar file format reader

Julia · 129 stars
LightXML.jl
A light-weight Julia package for XML based on libxml2.

Julia · 93 stars
TranscodingStreams.jl
Simple, consistent interfaces for any codec.

Julia · 90 stars
MeshIO.jl
IO for Meshes

Roff · 89 stars
Tar.jl
TAR files: create, list, extract them in pure Julia

Julia · 78 stars
LibSerialPort.jl
Julia wrapper for the libserialport c library

Julia · 72 stars
MsgPack.jl
Julia MessagePack implementation with type-driven, overloadable packing/unpacking functionality // msgpack.org[Julia]

Julia · 67 stars
49 more repositories live on View on GitHub

Beginner friendly Everything

Open All

Bind newer H5Dread_chunk2, H5Lget_info2, H5Literate2 C API variants Open

Difficulty 4/5 3-5 days Newbie friendliness 62/100

JuliaIO/HDF5.jl#1248 · Opened Sep 17, 2026
Conversion of Array[3] HDF5 type to and from julia Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

JuliaIO/HDF5.jl#1241 · 2 comments · Opened Sep 11, 2026
Blosc vs Blosc2 Open

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

JuliaIO/Zarr.jl#338 · Opened Sep 11, 2026
Incorrect mapping of field offsets for deeply nested hdf5 file Open

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

JuliaIO/JLD2.jl#743 · Opened Sep 11, 2026
Cannot load nested dictionaries in JLD2 file Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

JuliaIO/JLD2.jl#742 · Opened Sep 10, 2026
support the `struct` datatype Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

JuliaIO/Zarr.jl#337 · Opened Sep 10, 2026
Distinguishing cameras with identical names Open

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

JuliaIO/VideoIO.jl#465 · 1 comment · Opened Sep 10, 2026
Delta filter does not round trip for int types with overflow Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

JuliaIO/Zarr.jl#335 · Opened Sep 9, 2026
Remove implement_* macros Open

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

JuliaIO/DiskArrays.jl#307 · 2 reactions · Opened Sep 9, 2026
Provide some guidance in the docs about TiledDiskArray vs ConcatDiskArray Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

JuliaIO/DiskArrays.jl#306 · Opened Sep 2, 2026
No way to release a `Document` deterministically: `finalize(doc)` frees nothing, the finalizer being on `doc.node` Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

JuliaIO/EzXML.jl#220 · Opened Sep 2, 2026
Writing a Vector{@NamedTuple} containing String field(s) fails Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

JuliaIO/HDF5.jl#1239 · 5 comments · 1 reaction · Opened Sep 1, 2026
expose `dimension_names` in metadata Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

JuliaIO/Zarr.jl#319 · 3 comments · 1 reaction · Opened Aug 17, 2026
Expose the io mode to the user Open

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

JuliaIO/DiskArrays.jl#303 · Opened Aug 17, 2026
Distinguish between read-unit chunks and write-unit chunks Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

JuliaIO/DiskArrays.jl#302 · Opened Aug 17, 2026
API function to query for whether a certain chunk exists or not Open

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

JuliaIO/DiskArrays.jl#301 · Opened Aug 17, 2026
August 2026 refactor plan Open

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

JuliaIO/Zarr.jl#315 · 1 comment · 1 reaction · Opened Aug 17, 2026
Drop the hard `Pkg` dependency Open

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

JuliaIO/FileIO.jl#446 · Opened Aug 15, 2026
Add Gotcha for cluster users Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

JuliaIO/JLD2.jl#737 · 3 comments · Opened Aug 7, 2026
Add Checksums Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

JuliaIO/JLD2.jl#736 · Opened Aug 7, 2026
Simplified interface considerations Open

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

JuliaIO/gRPCClient.jl#122 · 4 comments · Opened Jul 28, 2026
Does Zarr.jl support authentication ? Open

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

JuliaIO/Zarr.jl#309 · 6 comments · Opened Jul 12, 2026
Partial lazy HDF5 tree parsing Open

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

JuliaIO/MAT.jl#247 · Opened Jul 9, 2026
Possible errors detected by JET.jl Open

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

JuliaIO/JLD2.jl#723 · Opened Jun 12, 2026
`DeflateDecompressor`/`ZlibDecompressor` error on trailing bytes after a complete stream (concatenated-stream policy) Open

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

JuliaIO/CodecZlib.jl#107 · 1 comment · Opened Jun 10, 2026
cannot get data from jld2 file Open

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

JuliaIO/JLD2.jl#720 · Opened Jun 6, 2026
Failed to compile the JLD2 package using JuliaC Open

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

JuliaIO/JLD2.jl#719 · Opened Jun 5, 2026
v0.4.20: unconditional checkbounds breaks custom index types handled via getindex_disk Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

JuliaIO/DiskArrays.jl#298 · Opened Jun 4, 2026
Method ambiguity for custom types with generically defined `StructUtils.StructStyle` methods Open

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

JuliaIO/JSON.jl#464 · 1 comment · Opened Jun 4, 2026
zcreate fails when fill_value is not the same type as the array Open

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

JuliaIO/Zarr.jl#292 · 1 comment · Opened Jun 3, 2026
Save-only error on newly registered file type with custom package Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

JuliaIO/FileIO.jl#440 · 1 comment · Opened Jun 3, 2026
gRPC.jl monorepo Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

JuliaIO/gRPCClient.jl#116 · 3 comments · Opened Jun 2, 2026
segfault during CI on multithread test on julia 1.10 Open

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

JuliaIO/VideoIO.jl#455 · Opened Jun 2, 2026
Supporting variable-length chunks for Zarr v3 Open

enhancement

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

JuliaIO/Zarr.jl#278 · 2 comments · Opened May 20, 2026
Possible optimizations for Zarr v3? Open

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

JuliaIO/Zarr.jl#276 · Opened May 19, 2026
Out-of-bounds memory read when unpacking truncated data Open

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

JuliaIO/MsgPack.jl#68 · Opened May 11, 2026
Support Python-compatible v3 metadata Open

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

JuliaIO/Zarr.jl#268 · Opened May 5, 2026
`Base.depwarn` should be generated in the constructor Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

JuliaIO/ProtoBuf.jl#299 · Opened Apr 30, 2026
test on julia 1.9 or restrict to julia 1.10 Open

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

JuliaIO/DiskArrays.jl#295 · 1 comment · Opened Apr 28, 2026
Support dimension_separator Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

JuliaIO/Zarr.jl#266 · 17 comments · Opened Apr 28, 2026
Segfault when using `link!` Open

bug

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

JuliaIO/EzXML.jl#218 · 4 comments · Opened Apr 16, 2026
Make MatlabStructArray an AbstractDict Open

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

JuliaIO/MAT.jl#239 · 1 comment · Opened Apr 15, 2026
Coordination Open

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

JuliaIO/Zstandard.jl#1 · 4 comments · 1 reaction · Opened Apr 11, 2026
ChunkCodecs.jl and JLD2.jl compat tests failing with HDF5_jll v2 Open

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

JuliaIO/HDF5.jl#1224 · 9 comments · Opened Apr 10, 2026
change default format to version 3 Open

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

JuliaIO/Zarr.jl#257 · 1 comment · Opened Apr 10, 2026
HDF5.name performance issue Open

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

JuliaIO/HDF5.jl#1223 · 6 comments · Opened Apr 3, 2026
Support for GeoZarr conventions Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

JuliaIO/Zarr.jl#254 · 4 comments · Opened Apr 2, 2026
Add SVGZ format Open

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

JuliaIO/FileIO.jl#430 · Opened Mar 31, 2026
New release with update `HDF5_jll` compat bounds Open

Difficulty 1/5 1-3 hours Newbie friendliness 72/100

JuliaIO/HDF5.jl#1221 · 8 comments · Opened Mar 27, 2026
Should we check if row indices is sorted in every column when importing sparse matrix? Open

Difficulty 3/5 1-2 days Newbie friendliness 46/100

JuliaIO/MAT.jl#236 · 6 comments · Opened Mar 24, 2026

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