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)

soundswallower

An even smaller speech recognizer / force aligner

bournemouth-forced-aligner

Extract phoneme-level timestamps from speeh audio.

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

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.

afaligner

📈 A forced aligner intended for synchronization of narrated text

kfa

A fast Khmer Forced Aligner powered by Wav2Vec2CTC and Phonetisaurus

aeneas-ng

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