Yes, both Boost and Crowdpurr offer a Free Trial.
Boost is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Crowdpurr is designed for and undefined.
Pricing for Boost Starts at $19/Month whereas for Crowdpurr Starts at $24.99/Month when Billed Yearly.
Some top alternatives to Boost includes Campaigner, Moosend, SMTP, Omnisend, Email List Verify, Constant Contact, Emma, KIRIM.EMAIL, FreshMail, MailOptin, Inbox Mailers, Listagram, SendFox, OptinMagic and Maildroppa.
Some top alternatives to Crowdpurr includes Boost, Rally.video, Crowdcast, Engagenow, EventX, Stream Club, Conferences i/o, Live Stream Polls, Crowd Product and CommentScreen.