The sudden news came on Friday that Dimdim has been acquired by Salesforce.com and that subscriptions to the online meeting service will end, some as early as March 15 this year. Thousands of businesses will be looking for an online meeting alternatives. These are some of the options to choose from.

MegaMeeting is browser based (no download required) and offers online conferencing with true VoIP audio, text chat and no long term contracts. There are four different packages to choose from. MegaMeeting Personal is designed for small businesses that don’t require any of the advanced features like desktop and computer sharing. It simply combines video and webcam software for video conferencing and allows up to 10 attendees. MegaMeeting Enterprise Private Branding lets you brand your meetings with your own logos and colors.

Mikogo is a free desktop sharing tool full of features to assist you in conducting the perfect online meeting or web conference. Provide online technical support for your customers. Conduct product demonstrations for business customers. Use Mikogo to discuss and edit a current team project.

Fuze Meeting offers online meetings in HD (High Definition); simply login and upload your content in order to start a meeting. Sharing is 100% browser based (no download required) and in real-time. With Fuze Meeting you get their “patent-pending synchronization – no lag time between presenter and viewer”.

WebConCentral offers three options for sharing in real-time: you can share one program and also share other applications as you open them; you can just share one program and keep everything else private; or you can share your entire desktop. You can either share or pass the presenter responsibilities to one of your attendees. You can also customize your webinar sign-up form to suit your preference and then send thank you notes after the webinar is over.

InterCall offers one click access for sharing documents and creating customizable online meetings. InterCall seamlessly integrates with Outlook & Lotus Notes plus provides interactive attendee tools. There’s no plugins or downloads required for attendees to join and meeting rooms do not require reservations.

iLinc lets you integrate your web conferencing data with CRM to help increase your revenue. You can display and collaborate on documents, applications, websites, and more. Other features include application and desktop sharing, annotation tools, chat and polls. iLinc for Meetings is a web based video conferencing tool with multi-person videos, participation tools, sharing, an interactive whiteboard, and content uploading.

Microsoft Office Live Meeting is a real-time online meeting space for your organization that must be hosted on your own server. Attendees will need to have it installed on their computer. They can then deliver presentations, brainstorm ideas, edit files, collaborate via the whiteboard and much more. There’s integrated audio, video and media along with application sharing and audience feedback tools.

Yugma can be used for team meetings, webinars, sales demos, training, tutoring, brainstorming and much more. With a free account you can share your desktop with up to 20 attendees. With a pro account you get real-time collaboration with a whiteboard, annotation tools, mouse and keyboard sharing, the ability to instantly change presenters, and more. You can have up to 500 attendees.

GoToMeeting can be used to meet and collaborate with others all over the world. You can provide presentations, demonstrations, online training, collaboration on documents and more in real-time for one low flat rate. You’ll have the option to show your entire screen, an application or just a specific document.