Software Alternatives, Accelerators & Startups

JustCall VS Emisar.dev

Compare JustCall VS Emisar.dev and see what are their differences

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JustCall logo JustCall

The Cloud Phone System of choice for modern sales and support teams. We help end clueless conversations by adding context to every call.

Emisar.dev logo Emisar.dev

One governed MCP server connects any AI agent to a finite action catalog, enforced on-host with pack trust, policy gates, human approvals, and a hash-chained audit trail.
  • JustCall Landing page
    Landing page //
    2023-08-19

The Cloud Phone System of choice for modern sales and support teams. End clueless conversations by adding context to every call. Call software, virtual numbers, SMS campaigns, native CRM integrations, and lots more at just $25 per user.

  • 100+ integrations with CRM & Business tools
  • Click to call from CRM
  • Go live in 70+ Countries
  • SMS Workflows & Automation
  • 3 sales dialers to choose from
  • Call queueing and forwarding
  • Comprehensive analytics
  • Conversation intelligence & much more
  • Emisar.dev Approvals
    Approvals //
    2026-07-21
  • Emisar.dev Audit Log
    Audit Log //
    2026-07-21
  • Emisar.dev Policies
    Policies //
    2026-07-21
  • Emisar.dev Runner fleet
    Runner fleet //
    2026-07-21

Emisar is the last MCP server youโ€™ll need to install: a Zero-Trust gateway connecting Claude, Cursor, ChatGPT, and any AI agent to your infrastructure. One server handles production access, debugging, alerts, and internal operations, with new capabilities added as packs. Agents can inspect real production state, debug what they shipped, and help resolve incidents. Safe reads run automatically; policy allows, blocks, or routes risky actions for approval. No SSH keys, VPNs, remote shells, or standing shell access โ€” and every call is recorded.

JustCall

$ Details
paid $30.0 / Monthly
Platforms
Web Browser Windows Mac OSX Linux Android iOS
Release Date
2018 February

Emisar.dev

Website
emisar.dev
$ Details
freemium $20.0 / Monthly (per runner)
Platforms
-
Release Date
-
Startup details
Country
United States
State
CA
Founder(s)
Andrew Dryga
Employees
1 - 9

JustCall features and specs

  • Ease of Use
    JustCall offers an intuitive interface that's simple to navigate, making it easy for teams to get up and running quickly.
  • Integration Capabilities
    JustCall integrates seamlessly with numerous CRMs and business tools, such as Salesforce, HubSpot, and Slack, enhancing workflow efficiency.
  • Global Calling
    The platform supports international calling, which is beneficial for businesses with global customers or remote teams.
  • Automation Features
    JustCall automates various tasks like call scheduling and follow-ups, saving time and reducing manual effort.
  • Analytics and Reporting
    The service provides comprehensive analytics and reporting features, enabling businesses to track performance and make data-driven decisions.

Possible disadvantages of JustCall

  • Price
    Some users find the pricing structure to be on the higher side, especially for small businesses or startups.
  • Call Quality
    There have been occasional reports of poor call quality or dropped calls, which can impact customer communication.
  • Limited Advanced Features
    While JustCall covers essential features, it may lack some of the nuanced advanced functionalities that are available in other, more comprehensive platforms.
  • Customer Support
    Some users have experienced delays or less satisfactory responses from customer support, which can be problematic in urgent situations.
  • Learning Curve for Advanced Features
    While basic functions are easy to use, mastering some of the more advanced features may require additional training or time.

Emisar.dev features and specs

No features have been listed yet.

Analysis of JustCall

Overall verdict

  • Overall, JustCall is considered a strong choice for businesses looking for a comprehensive and flexible communication tool. However, as with any service, it's important to evaluate how its features align with your specific business needs.

Why this product is good

  • JustCall is a cloud-based phone system designed for sales and support teams. It offers a suite of features including call forwarding, SMS capabilities, integrations with various CRM tools, and call monitoring. Users often praise its ease of use, ability to integrate with existing systems, and customer support. It's particularly beneficial for teams that need a reliable VoIP service with global reach.

Recommended for

    JustCall is ideal for small to medium-sized businesses that require a cost-effective, easy-to-implement call system. It's also suitable for remote teams and businesses with a high volume of outbound calls or those that rely heavily on CRM integrations.

JustCall videos

Customer Talks

More videos:

  • Review - Customer Talks
  • Demo - How to Set-up IVR?

Emisar.dev videos

No Emisar.dev videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to JustCall and Emisar.dev)
Communication
100 100%
0% 0
AI Tools
0 0%
100% 100
Call Center Software
100 100%
0% 0
Infrastructure Monitoring

Questions & Answers

As answered by people managing JustCall and Emisar.dev.

How would you describe the primary audience of your product?

Emisar.dev's answer:

emisar is for SRE, DevOps, platform engineering, infrastructure, and security teams that want AI agents to inspect and operate production systems. It is especially relevant to teams managing multiple Linux hosts, clusters, databases, cloud services, or regulated environments where unrestricted shell access and incomplete audit records are unacceptable.

Which are the primary technologies used for building your product?

Emisar.dev's answer:

The hosted control plane and operator interface use Elixir, Phoenix, LiveView, PostgreSQL, and Tailwind CSS. The host runner and MCP bridge are written in Go. Action packs use YAML and JSON Schema, while production infrastructure is managed with Terraform on Google Cloud. The system communicates through MCP, OAuth 2.1, TLS, and WebSockets.

Who are some of the biggest customers of your product?

Emisar.dev's answer:

  • Blitz.gg - game analytics for billions of matches and a pretty large infrastructure.

What's the story behind your product?

Emisar.dev's answer:

Founder Andrii Dryga spent a decade working as a CTO, full-stack engineer, SRE, and DevOps engineer. He experienced the cost of running the wrong command on the wrong cluster, while also seeing AI solve operational problems in seconds. emisar grew from the need to preserve both truths: AI agents are useful, and production access must remain bounded. Its answer is to give agents a reviewed catalog of operations instead of a blank terminal.

What makes your product unique?

Emisar.dev's answer:

emisar lets AI agents work on real infrastructure without giving them a shell. Agents choose from a finite catalog of typed, versioned actions. Policy decides what runs, what requires approval, and what is denied, while an outbound-only runner verifies the action again on the host. New capabilities arrive as packs behind the same MCP integration, and every request is recorded in both a searchable audit trail and a tamper-evident host journal. [

Why should a person choose your product over its competitors?

Emisar.dev's answer:

Choose emisar when you want an agent to keep investigating and handling routine operations without handing it SSH credentials or supervising every call. Compared with raw shell access, copy-paste workflows, or one-off MCP servers, emisar provides reviewed action contracts, host-level enforcement, risk-based policy, scoped access, approvals, pack integrity checks, and a durable audit trail. It is built specifically for governed infrastructure access rather than generic automation.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare JustCall and Emisar.dev

JustCall Reviews

The Top 9 Aircall Alternatives: How Do They Compare?
JustCall is a cloud-based phone system designed to help businesses get phone numbers and make, receive, and track calls.
Source: aircall.io
7 Best Cloud PBX Solution for Small to Medium Business
JustCall is a cloud-based PBX system that provides business owners with telephone numbers in more than 70 countries. The phone numbers created by JustCall appear as local numbers whenever youโ€™re contacting your clients, which provides a thorough level of transparency.
Source: geekflare.com

Emisar.dev Reviews

We have no reviews of Emisar.dev yet.
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Social recommendations and mentions

Based on our record, JustCall seems to be more popular. It has been mentiond 4 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

JustCall mentions (4)

  • Newbie here. How would you target other businesses for establishing partnerships in the efficient way?
    If you're going to cold call, utilize software that'll show call logs etc. In your CRM (justcall.io is one example, but there's tons of options for this). Source: over 3 years ago
  • Remote workers and phone system
    Another I've just heard about from colleagues is JustCall, as it integrates with HubSpot...which we just started using. But I can't speak to service. (Broadvoice only integrated with Salesforce which is well beyond what we can use) Good luck! Source: over 3 years ago
  • For the love of god, is there a way to mass upload calls to Zoho? Some work around to expedite this process?
    We use Just call (https://justcall.io/) - it's integrated and relatively cheap. Call straight out of Zoho. No relationship - just a customer. Source: almost 4 years ago
  • Chrome extension auto-login
    I installed a Chrome extension for justcall.io to make calls. I noticed that when I log in to my JustCall account and open the extension, it automatically logs me in. How can this be achieved technically? Is there a way for a web page to communicate with the chrome extensions? Source: almost 4 years ago

Emisar.dev mentions (0)

We have not tracked any mentions of Emisar.dev yet. Tracking of Emisar.dev recommendations started around Jul 2026.

What are some alternatives?

When comparing JustCall and Emisar.dev, you can also consider the following products

Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs

Dialpad - Switch is a cloud-based phone system built for Google Apps users.

CloudTalk - Work locally, grow globally

RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies

Nextiva - Business VoIP, cloud phone systems trusted by more than 150,000 companies. Powered by the leading cloud PBX VoIP platform, Nextiva is rated the best business VoIP service provider.

NICE inContact - Get the DMG Consulting report reprint on cloud contact centers.