Inventu Viewer+ Frequently Asked Questions

Our web terminal emulation server has been penetration tested and hardened to ensure that any user accessing the emulation is identified before seeing the first screen.

In recent years we have seen more and more of our customers requiring support for their Identity framework and have added built-in support as a result.

For Identity, we support:

• Windows Security with Active Directory
• Oauth2 OpenID Connect
• SAML 2.0 -- used with Okta, Salesforce, Active Directory Federation Services and many others
• Microsoft Azure Active Directory using Federation Services (also with OpenID Connect)
• Google Sign-In
• Any other framework requested by a prospect or customer--our environment and configuration interfaces make it easy and fast to add new support

For Mainframe and AS400/IBMi host connections, we support up to TLS 1.3 utilizing the Microsoft SCHANNEL API which is the most performant implementation in the industry

For UNIX/Linux/AIX host connections, we utilize up-to-date SSH libraries including support for SSH-based Password change requests

After comparing our client experience with the competition, we understand your question! But no, the Inventu Viewer+ technology starts at the server using pure compiled C that was never part of a memory-hogging desktop product base. From there, our javascript and HTTP messaging is designed for speed, speed and more speed, so that our users experience snappy response times and instant page rendering.

We have successfully load-tested a 4,000 session test running 800 transactions / SECOND on only a 2 vCPU Virtual Windows Server with minimal latency introduced by the emulation service. This makes Inventu Viewer+ the only web terminal emulation solution that can be even considered for cloud deployment.

At the time of this writing, we would recommend buying and renewing your subscriptions with Inventu. No other parties at this time have a signed, legally binding contract providing the right to legally make copies, distribute or provide license keys. Inventu has the only copy of the active source code, so is the only organization that can provide true maintenance (bug fixes and enhancements).

Inventu's primary product is the Inventu Viewer+ Terminal Emulation Server (U.S. Copyright TX0008657702) and its associated FVTerm Fast View Terminal Emulator and tools. Inventu manages licensing for Inventu Viewer+ at: Software.Inventu.com All worldwide customers for this leading technology can thank Inventu for its speed, functionality and reliability.

Purchase directly from Inventu to avoid potential Copyright violations: Only Inventu provides the full value for your maintenance and subscription investments with comprehensive support, continuous enhancements and bug fixes.

You will need to become an Inventu Customer--Flynet LTD has no access to the source code of the core server which is written in compiled C, and Inventu no longer has a relationship with Flynet.

If you provide your invoices from Flynet LTD, we will match the price you paid them. For subscriptions, we will offer same annual price or lower if you are paying more than our standard pricing.

Once you become an Inventu customer, not only will we fix the issue for you, but you will have access to seven years of enhancements and bug fixes not in the Flynet Version, which we built in January of 2018!

As of March 28, 2024, Flynet has re-branded and changed their website from FlynetViewer.com to JubilantSoftware.com. On the site, All References to "Flynet Viewer" have been changed to "Flynet's Terminal Emulator" --at first this was "Jubilant" but they fixed that. Note that all Web Service / API / UI Upgrades still MUST use the Inventu Authored "Flynet Viewer" emulator and toolset.

As of June, 2025, the download will be the old 2018 Flynet Viewer if you check ASCII (VT100/VT220/Wyse and so on)--if you check 5250 (IBMi/AS400) or 3270 (IBM Mainframe) you will get the new "installation zip" for the Jubilant Beta Tester Powershell installation scripts.

Flynet Jubilant is slower and is essentially undocumented. The buffers sent to the client for 3270 and 5250 screens are over 2X the size for Jubilant, which Flynet improved by using server-side zip algorithms on ALL outbound buffers, which increases CPU charges on Cloud installations. The ability to view screens visited has improved 2024 to 2025 but is still slow while the browser loads 300K+ screen images from the local browser DB.

If a better option to Flynet Viewer is desired (maybe because there have been no updates since 2018), we would of course recommend Inventu Viewer! Just show us your last invoice from Flynet and we will match or be less as our pricing is probably lower.

Absolutely! Many organizations are struggling with the problems imposed by running HOD as a Java Applet ever since Oracle deprecated support for applets. Even without the deprecation, major browser vendors have removed support for Java embedded in a web page.

We have major customers that have successfully moved from HOD to Inventu Viewer+, taking advantage of the smoother, faster installation (well, no installation, really) and the superior integration with other web components. We even support the popular ZipPrint multi-screen printing, with a server-side AutoPrint macro.

Our largest customer that converted from HOD has been live for 2 years and is a large State Agency with thousands of daily users connecting through up to 2,500 concurrent sessions on an Inventu Emulation Appliance (DELL Rack Server).

Absolutely! Many organizations are struggling with the problems imposed by running Reflections as a Java Applet as with the other Java-based terminal emulators.

We have successfully assisted one of our customers convert from a highly integrated Reflections Web environment (with hundreds of custom Java-based HLLAPI scripts) to Inventu Viewer+.

With 3,000 users, each with up to 5 sessions for a total of 15,000 active sessions on a 3 server cluster, this demonstrates both the performance and robust production-ready profile of our software and support.

Absolutely! Many organizations are struggling with the problems imposed by running BlueZone as a Java Applet or ActiveX Control ever since Oracle deprecated support for Java applets and as Internet Explorer has lost significant market share to Chrome (which doesn't run ActiveX controls). Even without the deprecation, major browser vendors have removed support for Java embedded in a web page and don't support ActiveX. Microsoft Edge, their latest browser doesn't even support ActiveX, making the BlueZone path into the future a dim, unsupported one.

Moving from BlueZone to Inventu Viewer+ takes advantage of the smoother, faster installation (well, no installation, really) and the superior integration with other web components.

Inventu Viewer+ pricing is based on a combination of a production server license combined with a concurrent session price. There are no per-seat costs for users--for pure web terminal emulation an entry price under $5000 can serve a large number of casual / infrequent users.

The TN3270 protocol is fully supported as one of the primary protocols for Inventu Viewer+, including standard as well as enhanced TN3270 (TN3270E). In addition to the Telnet portion of the 3270 protocol, Inventu Viewer+ also supports 3287 Device Printing, LU identifiers, SNA BIND packages and device declarations that are required by many hosts.

All unique attribute characteristics are supported by the Inventu Viewer+ Emulation service as well as the run-time components such as the FVTerm Fast View Web Terminal Emulator. This includes numeric-only fields and other attributes specific to the 3270 environment.

Our network impact for TN3270 emulation will not differ from existing Java or Desktop emulators, unlike other vendors have entered into the Pure Web terminal emulation space. These vendors, such as Cybelesoft, MicroFocus, Ericom and others, use a character / keystroke model where all keystrokes are sent and produce update buffers from the server. This has significant performance and cost impacts on existing networks compared to existing 3270 datastreams.

The TN5250 protocol is fully supported by Inventu Viewer+ for both the unique characteristics of the screen attributes as well as the OS/400 user interface patterns. For example, the tools and runtime support for Inventu support the standard selectable and editable lists of the AS400 environment known as "subfiles".

In addition, right out of the box, the AS400 menus and function keys will be clickable in the Viewer+ FVTerm web terminal emulator, as these are recognized and setup based on the standard patterns of the platform.

In June of 2019, we added support for Device Printing so that AS400 reports can be printed at the web browser using HTML technology and native Browser printer support.

During 2020, we added support for Double-Byte Character Sets (DBCS) including Chinese (both Traditional and Modern), Japanese and Korean.

Inventu's terminal emulation engine supports complex ASCII protocol requirements including box-drawing and multiple attribute schemes. The web-based terminal emulator has dynamic "send changes only" support for ASCII terminal types, using all DHTML and AJAX/WebSockets (no java or ActiveX terminal emulation black-box plugins).

For device printing, when print data is mixed with the display data, it is split-off, converted to PDF and displayed in a popup to the user.