Forced Alignment Python Packages

montreal-forced-aligner

Command line utility for forced alignment using Kaldi

aeneas

aeneas is a Python/C library and a set of tools to automagically synchronize audio and text (aka forced alignment)

pydomino-prebuilt

日本語音声に対して音素ラベルをアラインメントするためのツールです

soundswallower

An even smaller speech recognizer / force aligner

lyric-align

Place known lyrics on an audio timeline — CJK-first, built for sung vocals and rap.

bournemouth-forced-aligner

Extract phoneme-level timestamps from speeh audio.

nyra-forced-aligner

Word and phoneme level speech timing for spontanoues speech. Fast, accurate and robust.

readalign

Turn an audiobook and the matching ebook you own into one EPUB 3 with Media Overlays.

kfa

A fast Khmer Forced Aligner powered by Wav2Vec2CTC and Phonetisaurus

echoalign-asr-mlx

Local Apple Silicon CLI for ASR, subtitles, WebVTT/SRT, and timestamp-aligned JSON with MLX + Qwen3

afaligner

📈 A forced aligner intended for synchronization of narrated text

koreanfa

Korean and Japanese Forced Aligner

timething

Timething is a library for aligning text transcripts with their audio recordings.

qwen-aligner-toolkit

Production toolkit around Qwen3-ForcedAligner: multilingual word-level alignment, VAD, and speaker diarization.

aeneas-ng

aeneas is a Python/C library and a set of tools to automagically synchronize audio and text (aka forced alignment)