Odoo Feature List : 

E-commerce : Odoo's e-Commerce software is unlike anything you have ever seen before. Get an awesome catalog of products and great product description pages.

CRM : Work inside your sales funnel and get instant visual information about next actions, new messages, top opportunities and expected revenues.

Sales : Use templates to create polished, professional quotes in minutes. Send offers with clear pricing and let the customer accept it, reject it or ask for more information.

Inventory : Decrease your process times, automate transactions, reduce your stock levels and get complete traceability on all operations with the Odoo double entry inventory.

Purchase : Automate procurement propositions, launch requests for quotations, track purchase orders, manage suppliers' information, product receivals and suppliers' invoices.

Manufacturing : Use Odoo to manage all your assembly and/or manufacturing operations. Schedule manufacturing orders and work orders automatically.

Project : Odoo's collaborative and real-time project management helps you get the work done. Keep track of everything; from the customer contract to the final billing.

Marketing : Easily send mass mailings to your leads, opportunities and customers. Track the performance of mailing campaigns to improve conversion rates.

Event : Whether you organize meetings, conferences, training or webinars, Odoo gives you all the features you need to manage your online events and events' websites.

Invoicing : Create invoices based on quotes sent to your clients. Send professional looking invoices directly in just a click. Online payments and automated follow-ups

Human Resources : Get all your HR operations managed easily: knowledge sharing, recruitment system, appraisals, timesheets, contracts, attendance, payroll, etc.

Finance : Elegant and full featured, our accounting software is for any businesses. From integrated analytic accounting to budget, assets and multi-companies consolidation.

You can also check this link for more information

Link : https://www.odoo.com/page/open-source-alternative