OpenPhone
OpenPhone is a modern business phone system that adds a professional work line to your existing devices while providing powerful team collaboration features and automated communication workflows.
Slack
Slack is a central communication hub that connects your team with real-time messaging, file sharing, and integrated tools to streamline workflows and improve collaboration across your entire organization.
Quick Comparison
| Feature | OpenPhone | Slack |
|---|---|---|
| Website | openphone.com | slack.com |
| Pricing Model | Subscription | Freemium |
| Starting Price | $15/month | Free |
| FREE Trial | ✓ 7 days free trial | ✓ 30 days free trial |
| Free Plan | ✘ No free plan | ✓ Has free plan |
| Product Demo | ✓ Request demo here | ✓ Request demo here |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2018 | 2009 |
| Headquarters | San Francisco, USA | San Francisco, USA |
Overview
OpenPhone
OpenPhone is a digital phone system designed to help you separate your professional and personal communications without needing a second device. You can claim a dedicated local or toll-free number and manage all your calls, texts, and contacts through a sleek, intuitive app. It transforms your phone into a powerful business tool that works across your smartphone, tablet, and computer simultaneously.
The platform is built for modern teams who need more than just a dialer. You can share phone numbers with teammates to handle incoming queries together, set specific business hours to protect your personal time, and automate repetitive tasks like following up with missed calls. It integrates directly with your existing tech stack, ensuring your communication data stays synced with your CRM and productivity tools.
Slack
Slack is a productivity platform that transforms how you communicate with your team by moving conversations out of scattered email threads and into organized channels. You can create dedicated spaces for specific projects, departments, or office locations, ensuring everyone has access to the right information at the right time. It serves everyone from small startups to global enterprises, helping you stay connected whether you are working in the office or remotely.
You can share files, start huddles for quick voice chats, and use clips to record video updates for your teammates to watch later. By centralizing your tools and communication, you reduce context switching and keep your projects moving forward. The platform offers a robust free version for small teams and scales into advanced enterprise tiers with sophisticated security and compliance features.
Overview
OpenPhone Features
- Shared Phone Numbers Work together with your team on a single number to answer calls and respond to texts simultaneously.
- Business Hour Settings Set specific hours for your professional line so you can enjoy your personal time without work interruptions.
- Snippet Responses Create and use message templates to answer common questions instantly and maintain a consistent brand voice.
- Call Recording Record your conversations automatically or on-demand to keep accurate records and improve your team's performance.
- Auto-Attendant (IVR) Route your callers to the right person or department with a professional phone menu and custom greetings.
- AI Call Summaries Save time with automated transcripts and summaries that capture the key points of every conversation you have.
Slack Features
- Organized Channels. Create dedicated spaces for every project or topic so you can keep your conversations focused and searchable.
- Slack Huddles. Start quick audio or video calls directly in any channel to resolve issues faster without scheduling formal meetings.
- Workflow Builder. Automate your routine tasks and approvals with a simple drag-and-drop tool that requires no coding knowledge.
- Slack Canvas. Create and curate essential information directly within your workspace to keep your team aligned on goals and documents.
- File Sharing. Drag and drop files directly into your conversations so your team always has the latest version of your work.
- Slack Connect. Collaborate securely with external partners, vendors, or clients in shared channels without leaving your own Slack workspace.
Pricing Comparison
OpenPhone Pricing
- One local or toll-free number
- Unlimited talk and text in US/Canada
- Voicemail-to-text transcription
- Shared team phone numbers
- Basic call recording
- Set business hours
- Everything in Starter, plus:
- AI call summaries and transcripts
- Group calling and warm transfers
- Advanced IVR (Auto-attendant)
- HubSpot and Salesforce integrations
- Analytics and reporting
Slack Pricing
- 90 days of message history
- 10 integrations with other apps
- 1-on-1 audio and video huddles
- Single-workspace collaboration
- Standard security features
- Everything in Free, plus:
- Unlimited message history
- Unlimited app integrations
- Group huddles with up to 50 people
- Slack Connect for external partners
- Custom user groups
Pros & Cons
OpenPhone
Pros
- Setup takes minutes with an extremely intuitive interface
- Seamlessly syncs across mobile, desktop, and web apps
- Excellent text messaging capabilities including GIFs and snippets
- Affordable entry-level pricing for startups and freelancers
Cons
- International calling rates can be higher than competitors
- Occasional notification delays on certain mobile devices
- Advanced integrations require the higher-priced Business tier
Slack
Pros
- Extensive library of third-party app integrations
- Powerful search functionality for finding old messages
- Intuitive interface that is easy to adopt
- Excellent mobile app for staying connected anywhere
- Huddles make spontaneous collaboration very simple
Cons
- Notification fatigue can occur without careful settings
- Message history is restricted on the free plan
- Can become expensive for very large teams
- High memory usage on some desktop computers