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.

echoalign-asr-mlx

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

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

afaligner

A forced aligner intended for synchronization of narrated text

qwen-aligner-toolkit

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

timething

Aligning text transcripts with their audio recordings.

kfa

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)