Free developer tools and web applications running under corein.tech. Each project operates independently on its own subdomain — no account required.
Collection of 25+ browser-based developer utilities. JSON formatter, hash generator, JWT decoder, image compressor, PDF tools, QR generator, and more. All processing happens client-side.
West Java tourism information portal covering 27 regions, 89 destinations, local cuisine, souvenirs, hiking guides, and interactive maps. Fully data-driven from JSON with i18n support.
TikTok video downloader without watermark. Supports standard videos, slideshows, and audio extraction. Built-in download history with dark mode support.
A quiet space for anonymous messages people never had the courage to send. Read, write, and react to heartfelt messages with a calm editorial reading experience.
Collection of 25+ browser-based developer utilities. JSON formatter, hash generator, JWT decoder, image compressor, PDF tools, QR generator, and more. All processing happens client-side.
West Java tourism information portal covering 27 regions, 89 destinations, local cuisine, souvenirs, hiking guides, and interactive maps. Fully data-driven from JSON with i18n support.
TikTok video downloader without watermark. Supports standard videos, slideshows, and audio extraction. Built-in download history with dark mode support.
A quiet space for anonymous messages people never had the courage to send. Read, write, and react to heartfelt messages with a calm editorial reading experience.
Corein is a centralized index for all free web applications operating under corein.tech. Each project runs independently on its own subdomain, built with modern web technologies including Nuxt, Vue, and Tailwind CSS. This interface serves as a single directory to discover and access every deployed project — no account or registration required.