diff --git a/Makefile b/Makefile
index a2d8a7d44..e2273071f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,12 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+
+ifeq ($(OS),Windows_NT)
+	IS_WINDOWS := true
+else
+	IS_WINDOWS :=
+endif
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
@@ -18,10 +26,11 @@ all: run
 # - modern pip required for wheel
 # - add qt if missing
 pyenv:
-	python3 -m venv pyenv && \
-	. pyenv/bin/activate && \
-	pip install --upgrade pip setuptools && \
-	python -c 'import PyQt5' 2>/dev/null || pip install -r qt/requirements.qt
+	python$(if ${IS_WINDOWS},,3) -m venv pyenv && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
+	python --version && \
+	python -m pip install --upgrade pip setuptools && \
+	python -c 'import PyQt5' 2>/dev/null || python -m pip install -r qt/requirements.qt
 
 # update build hash
 .PHONY: buildhash
@@ -34,42 +43,42 @@ buildhash:
 
 .PHONY: develop
 develop: pyenv buildhash
-	@set -e && \
-	. pyenv/bin/activate && \
+	set -e && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	for dir in $(DEVEL); do \
 		$(SUBMAKE) -C $$dir develop BUILDFLAGS="$(BUILDFLAGS)"; \
 	done
 
 .PHONY: run
 run: develop
-	@set -e && \
-	. pyenv/bin/activate && \
+	set -e && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	echo "Starting Anki..."; \
-	qt/runanki $(RUNFLAGS)
+	python qt/runanki $(RUNFLAGS)
 
 .PHONY: build
 build: clean-dist build-rspy build-pylib build-qt add-buildhash
-	@echo
-	@echo "Build complete."
+	echo
+	echo "Build complete."
 
 .PHONY: build-rspy
 build-rspy: pyenv buildhash
-	@. pyenv/bin/activate && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	$(SUBMAKE) -C rspy build BUILDFLAGS="$(BUILDFLAGS)"
 
 .PHONY: build-pylib
 build-pylib:
-	@. pyenv/bin/activate && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	$(SUBMAKE) -C pylib build
 
 .PHONY: build-qt
 build-qt:
-	@. pyenv/bin/activate && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	$(SUBMAKE) -C qt build
 
 .PHONY: clean
 clean: clean-dist
-	@set -e && \
+	set -e && \
 	for dir in $(DEVEL); do \
 	  $(SUBMAKE) -C $$dir clean; \
 	done
@@ -80,29 +89,29 @@ clean-dist:
 
 .PHONY: check
 check: pyenv buildhash
-	@set -e && \
+	set -e && \
 	for dir in $(CHECKABLE_RS); do \
 	  $(SUBMAKE) -C $$dir check; \
 	done; \
-	. pyenv/bin/activate && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	$(SUBMAKE) -C rspy develop && \
 	$(SUBMAKE) -C pylib develop && \
 	for dir in $(CHECKABLE_PY); do \
 	  $(SUBMAKE) -C $$dir check; \
 	done;
-	@echo
-	@echo "All checks passed!"
+	echo
+	echo "All checks passed!"
 
 .PHONY: fix
 fix:
-	@set -e && \
-	. pyenv/bin/activate && \
+	set -e && \
+	. pyenv/$(if ${IS_WINDOWS},Scripts,bin)/activate && \
 	for dir in $(CHECKABLE_RS) $(CHECKABLE_PY); do \
 	  $(SUBMAKE) -C $$dir fix; \
 	done; \
 
 .PHONY: add-buildhash
 add-buildhash:
-	@ver=$$(cat meta/version); \
+	ver=$$(cat meta/version); \
 	hash=$$(cat meta/buildhash); \
 	rename "s/-$${ver}-/-$${ver}+$${hash}-/" dist/*-$$ver-*
diff --git a/README.development b/README.development
index d420fe815..6d69a9c24 100644
--- a/README.development
+++ b/README.development
@@ -76,3 +76,25 @@ You can use homebrew to install some dependencies:
 $ brew install python mpv lame portaudio protobuf npm rustup-init gettext rename
 
 $ brew link gettext --force
+
+Windows users
+----------
+
+1. Download and install Cygwin and put its `/bin/` directory on your system path.
+1. Install the Cygwin Packages: `apt-cyg install gettext rsync make`
+    1. Move these files to `/bin/`
+    1. /usr/bin/msgfmt.exe
+    1. /usr/bin/cyggettextsrc-0-19-8-1.dll
+    1. /usr/bin/cyggettextlib-0-19-8-1.dll
+1. Download and install Python for Windows (not from Cygwin) and put `python.exe` (not `python3.exe`) on your system path.
+1. Download and install pip for your Windows Python.
+1. Download and install rust (compiler), npm, git and put them your system path.
+1. Download and install Visual Studio 2017 or superior and:
+    1. `git clone https://github.com/evandroforks/portaudio`
+    1. Open the file `portaudio\build\msvc\portaudio.sln` with Visual Studio
+    1. Select the Solution Configuration as `Release` and the Solution Platforms as `x64` on the top toolbar
+    1. Go to the menu `Build -> Build Solution`
+    1. Copy the file `portaudio\build\msvc\x64\Release\portaudio.lib` to `C:\Python\libs\` (Or whatever your Windows Python is installed)
+1. Open a `cmd.exe` (command prompt) on the anki repository and run the command `sh run`
+    1. Do not `bash run` because it my call for Windows Subsystem fo Linux
+    1. Do not use any Cygwin terminal as `mintty.exe` because the `rust lang` compiler does not work with them
diff --git a/pylib/Makefile b/pylib/Makefile
index 34766523f..532b8d62c 100644
--- a/pylib/Makefile
+++ b/pylib/Makefile
@@ -1,4 +1,7 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+FIND_EXEC := $(if $(wildcard /bin/find),,/usr)/bin/find
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
@@ -14,11 +17,11 @@ PHONY: all
 all: check
 
 .build/run-deps: setup.py
-	pip install -e .
+	python -m pip install -e .
 	@touch $@
 
 .build/dev-deps: requirements.dev
-	pip install -r requirements.dev
+	python -m pip install -r requirements.dev
 	@touch $@
 
 PROTODEPS := $(wildcard ../proto/*.proto)
@@ -54,7 +57,7 @@ clean:
 # Checking python
 ######################
 
-CHECKDEPS := $(shell find anki tests -name '*.py' | grep -v buildinfo.py)
+CHECKDEPS := $(shell ${FIND_EXEC} anki tests -name '*.py' | grep -v buildinfo.py)
 
 .build/mypy: $(CHECKDEPS)
 	mypy anki
diff --git a/qt/Makefile b/qt/Makefile
index 457d0012c..2cadfc1ca 100644
--- a/qt/Makefile
+++ b/qt/Makefile
@@ -1,4 +1,13 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+FIND_EXEC := $(if $(wildcard /bin/find),,/usr)/bin/find
+
+ifeq ($(OS),Windows_NT)
+	IS_WINDOWS := true
+else
+	IS_WINDOWS :=
+endif
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
@@ -14,14 +23,15 @@ PHONY: all
 all: check
 
 .build/run-deps: setup.py
-	pip install -e .
+	$(if ${IS_WINDOWS},python -m pip install git+https://github.com/evandroforks/pyaudio,)
+	python -m pip install -e .
 	@touch $@
 
 .build/dev-deps: requirements.dev
-	pip install -r requirements.dev
+	python -m pip install -r requirements.dev
 	@touch $@
 
-.build/ui: $(shell find designer -type f)
+.build/ui: $(shell ${FIND_EXEC} designer -type f)
 	./tools/build_ui.sh
 	@touch $@
 
@@ -73,7 +83,7 @@ JSDEPS := $(patsubst ts/src/%.ts, web/%.js, $(TSDEPS))
 
 PYLIB := ../pylib
 
-CHECKDEPS := $(shell find aqt tests -name '*.py' | grep -v buildinfo.py)
+CHECKDEPS := $(shell ${FIND_EXEC} aqt tests -name '*.py' | grep -v buildinfo.py)
 
 .build/mypy: $(CHECKDEPS) .build/qt-stubs
 	mypy aqt
diff --git a/qt/i18n/copy-qt-files b/qt/i18n/copy-qt-files
index fe6210b18..7905cc848 100755
--- a/qt/i18n/copy-qt-files
+++ b/qt/i18n/copy-qt-files
@@ -3,7 +3,15 @@
 set -e
 
 out=../aqt_data/locale/qt
-mkdir -p $out
+mkdir -p "$out"
 
-qtTranslations=$(python -c "from PyQt5.QtCore import *; print(QLibraryInfo.location(QLibraryInfo.TranslationsPath))")
-rsync -a $qtTranslations/qt* $out
+qtTranslations="$(python -c "from PyQt5.QtCore import *; import sys; sys.stdout.write(QLibraryInfo.location(QLibraryInfo.TranslationsPath))")"
+unameOut="$(uname -s)"
+
+case "${unameOut}" in
+    CYGWIN*)
+        qtTranslations="$(cygpath -u "${qtTranslations}")"
+        ;;
+esac
+
+rsync -a "$qtTranslations"/qt* "$out"
diff --git a/qt/tools/extract-po-string.py b/qt/tools/extract-po-string.py
index 472537567..d467ba014 100644
--- a/qt/tools/extract-po-string.py
+++ b/qt/tools/extract-po-string.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+# -*- coding: UTF-8 -*-
 import os
 import json
 import re
diff --git a/qt/tools/extract_scss_colors.py b/qt/tools/extract_scss_colors.py
index 6202689f3..7928b7027 100644
--- a/qt/tools/extract_scss_colors.py
+++ b/qt/tools/extract_scss_colors.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+# -*- coding: UTF-8 -*-
 import re
 
 import json
diff --git a/qt/ts/package.json b/qt/ts/package.json
index 985d48d41..f0c29ab8d 100644
--- a/qt/ts/package.json
+++ b/qt/ts/package.json
@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "description": "Anki desktop js support files",
   "scripts": {
-    "build": "tsc --build; sass --no-source-map scss:../aqt_data/web",
+    "build": "tsc --build && sass --no-source-map scss:../aqt_data/web",
     "pretty": "prettier --write src/*.ts",
     "check-pretty": "prettier --check src/*.ts"
   },
diff --git a/react/Makefile b/react/Makefile
index 60dac2cf0..f955c3cb5 100644
--- a/react/Makefile
+++ b/react/Makefile
@@ -1,4 +1,6 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
diff --git a/rslib/Makefile b/rslib/Makefile
index af629a269..4e322e392 100644
--- a/rslib/Makefile
+++ b/rslib/Makefile
@@ -1,4 +1,6 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
diff --git a/rspy/Makefile b/rspy/Makefile
index fee123722..7c9ed30ea 100644
--- a/rspy/Makefile
+++ b/rspy/Makefile
@@ -1,4 +1,6 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
@@ -44,7 +46,7 @@ clean:
 RUST_TOOLCHAIN := $(shell cat rust-toolchain)
 
 .build/tools: requirements.txt rust-toolchain
-	pip install -r requirements.txt
+	python -m pip install -r requirements.txt
 	rustup toolchain install $(RUST_TOOLCHAIN)
 	rustup component add rustfmt-preview --toolchain $(RUST_TOOLCHAIN)
 	rustup component add clippy-preview --toolchain $(RUST_TOOLCHAIN)
diff --git a/run b/run
index 9bbd8e2d1..7e984857d 100755
--- a/run
+++ b/run
@@ -1,3 +1,4 @@
 #!/bin/bash
 
+python --version
 make -C $(dirname $0) run RUNFLAGS="$*"
diff --git a/svelte/Makefile b/svelte/Makefile
index 52b217b26..7b058bc50 100644
--- a/svelte/Makefile
+++ b/svelte/Makefile
@@ -1,4 +1,6 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables
diff --git a/tslib/Makefile b/tslib/Makefile
index a8668acf8..c11b6e0e5 100644
--- a/tslib/Makefile
+++ b/tslib/Makefile
@@ -1,4 +1,6 @@
-SHELL := bash
+SHELL := /bin/bash
+ECHOCMD := /bin/echo -e
+
 .SHELLFLAGS := -eu -o pipefail -c
 .DELETE_ON_ERROR:
 MAKEFLAGS += --warn-undefined-variables