diff --git a/.gitignore b/.gitignore
index 74be88339b..0ddb29c313 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,10 @@
 # Fortran module files
 *.mod
 *.smod
+*__genmod.f90
+*__genmod.mod
+*.i90
+*.optrpt
 
 # Compiled Static libraries
 *.lai
@@ -27,7 +31,7 @@
 *.exe
 *.out
 *.app
-__pycache__/*
+__pycache__/
 __init__.py
 *.pyc
 *.egg-info
@@ -37,6 +41,19 @@ build*/
 _build*/
 install/
 vs-build/
+gitVersionInfo.h
+compile_commands.json
+CMakeUserPresets.json
+.cache/
+*.gcda
+*.gcno
+
+# vs-build files
+.vs
+*.user
+*.u2d
+*.pdb
+*.ilk
 
 # OS and IDE specific files
 .DS_Store
@@ -45,12 +62,17 @@ vs-build/
 .fortls
 .devcontainer
 .idea
-.env
+.env*
+.venv
+venv/
+.ipynb_checkpoints/
 
 # backup files
 *.asv
 ~$*.xlsx
 .*.swp
+*.swo
+*~
 
 # LaTeX compiling files
 *.aux
@@ -69,3 +91,25 @@ openfast_io/openfast_io/_version.py
 *.code-workspace
 docker-compose.yml
 .devcontainer/
+
+# simulation output files
+*.outb
+*.pkl.gz
+*.ech
+*.chkp
+*.dbg
+
+# AI steering files for specific users
+.kiro/*
+/CLAUDE.md
+.continue/
+.cursor/
+.claude/
+.aider*
+.windsurf/
+AGENTS.md
+GEMINI.md
+
+# credential files
+*credentials*.json
+*serviceaccount*.json