Home - GWI - Great Works Internet, Internet you can rely on now, and always. Get peace of mind with our GWI Speed Guarantee. (For Example: 123 Main St, South Portland, Maine, 04106) News & Happenings: GWI Becomes B Corporation Certified Colin Updated Aug 10, 2020 Free Public WiFi Hotspots in South Portland and Sanford Colin Updated Apr 20, 2020 Relocating Hosted Phones Colin Updated Mar 30, ... Read More.