Café Kaldi

3/F, Esplanade, Ratchadapisek Rd., 02-660-9256. Open daily 10am-10pm.
This Japanese-style café offers a comfy setting along with free electric supply to keep your laptop charged while you browse the net.

Coffee Society

Silom Rd., 02-235-9784. Open 24 hours.
Silom’s favorite free WiFi joint. The three-story shophouse has plenty of little corners for you to hide behind your laptop and the added benefit of 24-hour opening. The food isn’t that great, though, so stick to the drinks.

Cup B

2/F, Lido Theatre, Siam Square Soi 3, 02-558-4700. Open daily 11am-9pm.
This artsy café decked out with cute colorful details is a teen favorite for afternoon chilling and people watching. Just be warned that the food is not particularly awesome.

Kiosk

6/F, The Emporium, 02-664-8702. BTS Phrom Phong. Open Tue-Sun, 10:30am-9pm.
The cozy cafe by the TCDC library offers unlimited free WiFi to customers spending over B120 on their food (we’ll pass) and beverages (great coffee). Well-designed furniture and sweeping views of Benjakitti Park draw in a crowd of laptop-equipped farang while design students usually stick to the members-only library.

SCG Experience

Open daily 10:30am-9pm. Pradit manutham Rd., 02-101-9922
This futuristic architecture that showcases the Siam Cement Group’s products also offers free WiFi for four hours to visitors; you need only register at the counter. If you think plan to work their all day, apply for a two-year membership at B600, and get unlimited wifi plus access to a sizeable library of design and architecture books.

The Third Place

137-137/1 Thonglor Soi 10, 02-714-7929. Open daily 9am-10pm.
www.thirdplacebangkok.com
A peaceful building in the middle of bustling Thonglor it’s perhaps the ideal spot for out-of-office work and meetings. WiFi here is not actually free but if you pay B120 you’ll get a B100 voucher, a B25 discount coupon for food and two hours of free WiFi as well as access to their meeting rooms. Or pay the B699 monthly fee and get a B250 gift voucher, B500 discount coupon and unlimited WiFi.