What is the best CMS (Content Management System) for a B2B portal?
I would like to start small B2B portal for buyers and sellers. Can you please recommend me free CMS like WordPress, Joomla and etc. Features include:
User signup via Facebook or Google account
Buyer and seller account
User account management
Free and paid membership
In my opinion WordPress can work great for any type of business. To craft a real estate website for my client, I used one of these realtor wordpress templates https://www.templatemonster.com/category/real-estate-agency-wordpress-themes/ . Be sure to check this resource out to find an appropriate template for your website. Good luck!
Most of the business people prefer magento, It's a suitable one for b2b like ecommerce portals. I suggest you to go with apphitect marketplace script http://www.apphitect.ae/magento-2-marketplace.php which will be the suitable one for your requirement.
You should check Yo!Kart, an eCommerce platform becoming best and preferred choice by startups who are interested in experiencing online eCommerce industry. The readymade muti vendor solution has advanced features that makes it most reliable solution to start B2B portal:
1) Three layer security that keeps your system secure from client side as well as server side.
2) Robust Report Generation to analyze your eCommerce store performance.
3) Scalable that lets you customize your online store anytime.
4) Easy to use CMS that can be easily managed by even a non technical person.
5) Less investment of $250 to start with.
Find details about Yo!Kart here: http://www.fatbit.com/website-design-company/multi-vendor-ecommerce-system.html
To create a B2B portal I recommend that you use WordPress CMS with special Themes/Apps from Sitemile: www.sitemile.com. They offer more than the traditional
premium theme. Their themes help ambitious entrepreneurs to earn money online. Several of their apps and scripts are quite powerful. My favorite is WordPress Pricerr Theme. But check out all their products at http://sitemile.com/products/. Several probably meet your minimum requirements. - The Pragmatic Web Designer
Wordpress does the good job. It has good plugins and extensible as per our customization. I see sites developed using Wordpress for this kind of B2B sites.
Wordpress is great but we have found Squarespace to be awesome with the look of the CMS's and the functionality.
Very big commitment and a lot of work
I don't think any CMS comes out of the box set up like you ask. But you will be able to integrate them.
I can't see wordpress fiting up to this it was after all a blog in a box.
Joormla is probably starting point if you not use to Drupal its a little easier to handle.
You can do all this with Joomla. Based on this short list of requirements, I'd recommend exploring HikaMarket, which is a great multi-vendor solution for B2B.
For signup via social network, there are several Joomla extensions that provide that capability. There are also several good membership components.
Note that while Joomla is open source and free, quality extensions to do what you need are likely to be commercial. Even if you do all the web design & development work on your own, you will need to budget a few hundred dollars a year on software to keep current with upgrades and releases.
If CMS is the primary requirement I would look at WordPress because of the ease of editing. The list of requirements suggestion recommended by Jeff is a great place to start. Then see if the wordpress plug-ins that are available and vetted by the community will serve all of the requirements. Be careful of conflicts in the script, and go for it.
If you're looking at a custom dev, you could try SE. It can be modified to suit your requirements. As you're a developer yourself, there are several open source modules that can be adapted and integrated into that platform.
However, if you're looking for a barebones framework, Makoala is also a good one to work with. I believe it's open source as well.
Hope this helps, and feel free to connect if I can of further help.
You could also try one of the cheap clones of sites like alibaba (or other of your favorite b2b portal). the clones don't use the best security, and they aren't the prettiest in the world, but for just starting out at low cost this might work for you. just google "alibaba clone", etc.