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Immediate-Mode-UI

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Nuklear
A single-header ANSI C immediate mode cross-platform GUI library

C · 11397 stars
neonuklear
Wish list & plan for a major overhaul of Nuklear (an immediate/retained mode multiplatform lightweight GUI library)

12 stars

Beginner friendly Everything

Open All

Suggestions for new docking features Open

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

Immediate-Mode-UI/Nuklear#982 · 2 comments · Opened Aug 10, 2026
SDL3: When Font is NULL, use `SDL_RenderDebugText()` Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

Immediate-Mode-UI/Nuklear#979 · 6 comments · Opened Jul 22, 2026
THE example on the documentation page can't be compiled Open

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

Immediate-Mode-UI/Nuklear#977 · 8 comments · Opened Jul 19, 2026
nk_edit_* and nk_property_* both get cursor focus when used next to each other Open

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

Immediate-Mode-UI/Nuklear#974 · 1 comment · Opened Jul 3, 2026
[SDL3+Emscripten] 2 issues: nk_label_wrap bleeds and ui unresponsive? Open

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

Immediate-Mode-UI/Nuklear#966 · 6 comments · Opened Jun 7, 2026
Compiler warnings Open

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

Immediate-Mode-UI/Nuklear#958 · 9 comments · Opened May 13, 2026
stb_image inconsistencies Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

Immediate-Mode-UI/Nuklear#953 · 12 comments · Opened May 2, 2026
bad handling of bool's Open

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

Immediate-Mode-UI/Nuklear#936 · 12 comments · Opened Apr 6, 2026
add a way to keep certain widgets inside of visible area Open

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

Immediate-Mode-UI/Nuklear#899 · Opened Feb 17, 2026
Hidden/closed window is to be ignored due to nk_clear Open

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

Immediate-Mode-UI/Nuklear#896 · 19 comments · 2 reactions · Opened Feb 12, 2026
todo: use same CFLAGS for all demos (general pass for each ./demo/*/Makefile) Open

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

Immediate-Mode-UI/Nuklear#895 · 7 comments · Opened Feb 10, 2026
there are several stuct fields with int types but bool semantics (and all kinds of integer shenanigans) Open

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

Immediate-Mode-UI/Nuklear#891 · 4 comments · Opened Feb 6, 2026
duplicated sizeof checks in src/nuklear_internal.h Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

Immediate-Mode-UI/Nuklear#889 · Opened Feb 6, 2026
[META::Emscripten] Live version integration strategy and progress report Open

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

Immediate-Mode-UI/Nuklear#888 · 1 comment · 2 reactions · Opened Feb 5, 2026
[META] Proposal for Changes Open

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

Immediate-Mode-UI/Nuklear#887 · 2 comments · 1 reaction · Opened Feb 3, 2026
add a way to reuse Nuklear configuration across multiple source files Open

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

Immediate-Mode-UI/Nuklear#886 · 17 comments · Opened Feb 3, 2026
Pascal Bindings Open

Backend

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

Immediate-Mode-UI/Nuklear#885 · Opened Feb 2, 2026
Text_edit ctrl+key isn't working as intended in the sdl3 demo Open

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

Immediate-Mode-UI/Nuklear#882 · 18 comments · Opened Jan 30, 2026
Point to (backend) documentation somewhere Open

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

Immediate-Mode-UI/Nuklear#877 · 6 comments · Opened Jan 25, 2026
demos do not handle NK_UINT_DRAW_INDEX flag, resulting in broken rendering Open

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

Immediate-Mode-UI/Nuklear#872 · 2 comments · Opened Jan 3, 2026
Vala bindings Open

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

Immediate-Mode-UI/Nuklear#867 · 12 comments · Opened Dec 30, 2025
nk_widget_bounds and nk_input_is_mouse_hovering_rect treat nk_rect differently on nk_image Open

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

Immediate-Mode-UI/Nuklear#863 · Opened Dec 1, 2025
[BUG, BACKEND: D3D9] Clipboard paste broken for D3D9 backend Open

Difficulty 2/5 1-3 hours Newbie friendliness 56/100

Immediate-Mode-UI/Nuklear#858 · Opened Nov 14, 2025
[BUG] Previous `edit` will draw cursor after switching focus to another `edit` in a different window Open

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

Immediate-Mode-UI/Nuklear#856 · 2 comments · Opened Nov 11, 2025
Some examples can break due to dependency on headers coming from different files Open

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

Immediate-Mode-UI/Nuklear#850 · 2 comments · Opened Nov 4, 2025
Some warning in Win10 for MSYS2 mingw64 about warning: ISO C90 does not support 'long long' [-Wlong-long] Open

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

Immediate-Mode-UI/Nuklear#847 · 3 comments · Opened Oct 29, 2025
There can be only one Popup at the same time Open

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

Immediate-Mode-UI/Nuklear#842 · 2 comments · 2 reactions · Opened Oct 24, 2025
[CRITICAL BUG] `nk_str_insert_text_char` and `nk_str_insert_str_char` has wrong implementation Open

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

Immediate-Mode-UI/Nuklear#840 · 2 reactions · Opened Oct 17, 2025
Scrollable region in demo has its text rendering cut Open

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

Immediate-Mode-UI/Nuklear#839 · 5 comments · Opened Oct 17, 2025
[BUG] `NK_EDIT_AUTO_SELECT` ignored when combined with `NK_EDIT_GOTO_END_ON_ACTIVATE` Open

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

Immediate-Mode-UI/Nuklear#838 · Opened Oct 16, 2025
many code paths use asserts and null checks for the same thing at the same time Open

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

Immediate-Mode-UI/Nuklear#835 · 5 comments · Opened Oct 8, 2025
[BUG] `nk_label_wrap` eats the last character at line breaks (`nk_text_clamp` is not completely correct) Open

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

Immediate-Mode-UI/Nuklear#828 · 1 comment · Opened Sep 10, 2025
Nuklear markup or language? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

Immediate-Mode-UI/Nuklear#824 · 9 comments · Opened Aug 4, 2025
Font Optimize Open

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

Immediate-Mode-UI/Nuklear#822 · 1 comment · Opened Jul 7, 2025
Strange clipping behavior in vulkan demo Open

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

Immediate-Mode-UI/Nuklear#821 · 1 comment · Opened Jun 28, 2025
What compression does Nuklear use for fonts? Open

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

Immediate-Mode-UI/Nuklear#819 · 1 comment · Opened Jun 21, 2025
Question about different commands, sizes, and buffer alignment Open

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

Immediate-Mode-UI/Nuklear#816 · 2 comments · Opened Jun 16, 2025
Why c89? Why not c99 or c11? Open

5.x

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

Immediate-Mode-UI/Nuklear#815 · 24 comments · Opened Jun 16, 2025
My simple WASM-demo does not work on Android Open

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

Immediate-Mode-UI/Nuklear#814 · 2 comments · Opened Jun 8, 2025
Demo has dependencies and contains paths specific to individual developers' machines Open

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

Immediate-Mode-UI/Nuklear#813 · 4 comments · Opened May 30, 2025
New outer scroll bar appears when function is moved to another file Open

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

Immediate-Mode-UI/Nuklear#805 · 1 comment · Opened May 8, 2025
NK_WINDOW_SCROLL_AUTO_HIDE doesn't work for groups? Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

Immediate-Mode-UI/Nuklear#804 · Opened May 6, 2025
The text rendering nuklear_glfw_gl4 is disgusting Open

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

Immediate-Mode-UI/Nuklear#796 · 16 comments · Opened Mar 29, 2025
Unsafe floating-point comparisons with '==' or '!=' Open

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

Immediate-Mode-UI/Nuklear#793 · Opened Mar 21, 2025
SFML: Second Text Input has ? Open

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

Immediate-Mode-UI/Nuklear#783 · 1 comment · Opened Feb 26, 2025
What is the correct/easiest way to get the max y scroll value? Open

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

Immediate-Mode-UI/Nuklear#770 · 7 comments · Opened Feb 6, 2025
When loading the font from memory, the buttons stop displaying Open

Difficulty 4/5 3-5 days Newbie friendliness 15/100

Immediate-Mode-UI/Nuklear#769 · 1 reaction · Opened Feb 3, 2025
Memory safety (use after free) issue in `nk_buffer_realloc` Open

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

Immediate-Mode-UI/Nuklear#768 · 5 comments · 3 reactions · Opened Feb 2, 2025
It is not possible to flip images using nk_image and nk_subimage Open

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

Immediate-Mode-UI/Nuklear#766 · 1 comment · Opened Jan 28, 2025
nk_do_edit cut and copy handler passes len as grapheme cluster count to nk_plugin_copy not as count bytes in const char* Open

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

Immediate-Mode-UI/Nuklear#764 · 1 comment · 2 reactions · Opened Jan 24, 2025

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