Main features: Bulk URL Opener is a web-based application or browser extension that opens multiple URLs simultaneously. Key capabilities include smart URL management (auto-adding https://), flexible input (line-by-line/file import), customizable opening patterns (tabs/windows/domain grouping), tab creation control (delays to prevent overload), list management (save/load/edit collections), focus control (load tabs on activation), keyboard shortcuts (Ctrl+Shift+U), and search engine integration (non-URL text handling). Target users: SEO professionals (multi-site management), content writers (research gathering), web researchers (data collection). Core advantages: time efficiency (batch opening), resource management (controlled loading sequences), cross-platform compatibility (Chrome/Firefox/Safari), advanced organization (URL grouping/saved collections). Use cases: SEO competitor analysis, content research, data collection. Free to use.