Those websites you specified in the thread are legit. However, Laaptu.com is not a "Free Messaging site". Way2sms is an free messaging site, with thosands of users around the globe. Like that Laaptu is a simple mobile reacharge site where you can play and earn knowledge and reacharges.
In my opinion these are legit and I had too tried it. Laaptu will reacharge your mobile when you cross the minimum level like 10 rupees.
Way2sms currrently not providing any free reacharges but they provide free messages. There are tons of sites which are similar to these and legit to use. Here are some of those sites.
Fullonsms provide you the fastest free message delivery around India. You can join in fullonsms and send free sms anywhere to India. There are no SMS limits. Now, they also provides picture and video messages. The only think you need is internet then you can send messages from these sites.
Ultoo is free messaging and reacharge website. It provide 2Ps each for every message you send. When your amount reaches the minimum level you can ask for reacharge. This site also provides quiz and etc and you can also earn from it. You can also get money for reffering your friends and coworkers to this site.
Basically, these websites are legit in everyway and you can send unlimited messages with just an internet connection. Hope you got your answer. Have a Great Day!
Thanks & Regards,
All I Can Do Is Be Me!