Jubler vs OOONA

Jubler is a free, open-source desktop editor for creating, revising and converting text-based subtitles. It runs on Linux, macOS and Windows and handles more than 20 subtitle formats, including SRT, ASS/SSA, WebVTT, TTML, ITT, DFXP and YouTube subtitles. Users can shift timing, convert frame rates, split or join entries and files, check spelling, and search and replace with regular expressions. A timeline with draggable subtitle blocks supports two-point synchronization. With VLC, Jubler can preview video and frames, show audio waveforms and let users edit subtitles during playback. Quality tools include configurable validation rules and TED guidelines checks. Translation mode supports Azure Translator, and command-line tools are available for batch work and automation. Downloads include builds for Apple Silicon and Intel Macs, Windows, Linux x86_64 and arm64, as well as a generic Java version. VLC is required for video preview and audio waveforms; ASpell is suggested for spell checking. Jubler is licensed under AGPL-3.0.

OOONA provides management and production software for media localization, covering subtitling, voiceover, dubbing and captioning. OOONA Integrated combines a translation management system with production tools for end-to-end project management. It offers customizable project and client dashboards, automated and bulk assignments, live project and user metrics, and access controls for internal and external users. OOONA Tools can be selected individually or in packages and include Create + Translate, Translate, Review, Transcribe, Subtitle Converter, Burn & Encode, Multilingual QC, Compare and Audio Description. Create + Translate supports timed-text authoring, editing, translation and reformatting with precise positioning and frame-accurate timing. APIs handle subtitle and caption conversion, validation, configurable checks, and automated work-order intake and delivery updates. Integrated supports single sign-on through Auth0, Microsoft ADFS, Microsoft Azure, MiniOrange and Okta, plus APIs for third-party language and client-management systems. OOONA says it uses DRM-protected video, browser-based work without transferring video assets, multifactor authentication, watermarking and continuous penetration testing. A free trial lasts four weeks with limited subtitle export; Timed Text Lab offers free, account-free timed-text tools.