Exhibit 99.1

FOR IMMEDIATE RELEASE

Media Relations Contact:	Investor Relations Contact:
Holly Burkhart	Michael Magaro
TIBCO Software Inc.	TIBCO Software Inc.
(650) 846-8463	(650) 846-5747
hburkhart@tibco.com	mmagaro@tibco.com

TIBCO SOFTWARE REPORTS THIRD QUARTER FINANCIAL RESULTS

Total revenue up 12% Year over Year

PALO ALTO, Calif., September 27, 2007 – TIBCO Software Inc. (Nasdaq: TIBX) today announced results for its third quarter, which ended on September 2, 2007.

Total revenue for the third quarter of fiscal 2007 was $135.1 million and net income was $4.6 million, or $0.02 per diluted share. This compares to total revenue of $120.4 million and net income of $11.3 million, or $0.05 per diluted share, as reported for the third quarter of fiscal 2006. A major factor in the change in profitability in the third quarter of fiscal 2007 was an increase in expense due to the acquisition of Spotfire Holdings, Inc., which was completed at the start of the quarter.

On a non-GAAP basis, net income for the third quarter of fiscal 2007 was $12.1 million or $0.06 per diluted share, compared with $15.5 million or $0.07 per diluted share for the third quarter of fiscal 2006.

“Although Q3 results weren’t in line with what we projected, I remain confident in the strength of our technology and our ability to achieve profitable growth as we close out the year and for the long-term,” said Vivek Ranadivé, TIBCO’s chairman and chief executive officer.

Third Quarter Fiscal 2007 Highlights

• Closed 89 deals over $100k including 12 deals over $1 million;

• Deferred revenue increased 35% year over year;

• Added 65 new customers;

• Repurchased 10 million shares;

• Successfully completed the acquisition of Spotfire Holdings, Inc.; and

• Made significant sales to both new and existing customers, including The Aged Care Standards and Accreditation Agency Ltd., BNP Paribas, CLSA Limited, The Carphone Warehouse, LexisNexis, Mahindra and Mahindra Limited, Nielsen Media Research, SERPRO S.A., the State of California Administrative Office of the Courts, and The University of Melbourne.

Conference Call Details

TIBCO will hold its Q3 fiscal 2007 earnings conference call today at 5:00 pm ET / 2:00 pm PT. The conference call will be hosted by Thomson Financial and may be accessed over the Internet at www.tibco.com or via dial-in at (800) 231-9012 or (719) 457-2617. Please join the conference call at least 10 minutes early to register. A replay of the conference call will be available until midnight on October 27, 2007 at www.tibco.com or via dial-in at (888) 203-1112 or (719) 457-0820. The pass code for both the call and the replay is 3565214.

About TIBCO

TIBCO Software Inc. provides enterprise software that helps companies achieve service-oriented architecture (SOA) and business process management (BPM) success. With over 3,000 customers, TIBCO has given leading organizations around the world better awareness and agility—what TIBCO calls The Power of Now®. To learn more, contact TIBCO at +1 650-846-1000 or on the Web at www.tibco.com.

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TIBCO, The Power of Now and TIBCO Software are trademarks or registered trademarks of TIBCO Software Inc. in the United States and/or other countries. All other product and company names and marks mentioned in this document are the property of their respective owners and are mentioned for identification purposes only.

About Non-GAAP Financial Information

This press release includes non-GAAP financial measures. For a description of these non-GAAP financial measures, including the reasons management uses each measure, and reconciliations of these non-GAAP financial measures to the most directly comparable financial measures prepared in accordance with Generally Accepted Accounting Principles (GAAP), please see the section entitled “About Non-GAAP Financial Measures” and the accompanying table entitled “Reconciliation of GAAP to Non-GAAP Measures.”

Legal Notice Regarding Forward-Looking Statements

This release contains forward-looking statements within the meaning of the “safe harbor” provisions of the federal securities laws, including, without limitation, TIBCO’s ability to achieve profitable growth in fiscal 2007 and beyond. Because these forward-looking statements involve risks and uncertainties, important factors could cause actual results to differ materially from such forward-looking statements. These factors include: TIBCO’s ability to compete with other enterprise software providers and its ability to successfully execute its business plan. Additional information regarding potential risks is provided in TIBCO’s filings with the SEC, including its most recent Quarterly Report on Form 10-Q for the quarter ended June 3, 2007. TIBCO assumes no obligation to update the forward-looking statements included in this release.

TIBCO Software Inc.

Condensed Consolidated Balance Sheets

(unaudited)

(in thousands)

	September 2, 2007		November 30, 2006
ASSETS
Current assets:
Cash and cash equivalents	$	109,113	$	138,912
Short-term investments		114,430		400,658
Accounts receivable, net		114,794		149,141
Prepaid expenses and other current assets		63,750		35,699
Total current assets		402,087		724,410
Property and equipment, net		112,752		113,787
Goodwill		401,630		274,442
Acquired intangible assets, net		113,103		55,072
Long-term deferred income tax assets		33,348		21,437
Other assets		49,257		37,211
Total assets	$	1,112,177	$	1,226,359
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	8,611	$	12,651
Accrued liabilities		89,490		74,347
Accrued excess facilities costs		5,463		4,251
Deferred revenue		115,421		102,269
Current portion of long-term debt		2,070		1,892
Total current liabilities		221,055		195,410
Accrued excess facilities costs, less current portion		12,315		18,150
Long-term deferred revenue		9,632		4,151
Long-term deferred income tax liabilities		27,965		11,439
Long-term debt, less current portion		45,205		46,453
Other long-term liabilities		5,267		4,749
Total long-term liabilities		100,384		84,942
Total liabilities		321,439		280,352
Minority interest		344		—
Total stockholders' equity		790,394		946,007
Total liabilities and stockholders’ equity	$	1,112,177	$	1,226,359

TIBCO Software Inc.

Condensed Consolidated Statements of Operations

(unaudited)

(in thousands, except net income per share)

	Three Months Ended						Nine Months Ended
	September 2, 2007			September 3, 2006			September 2, 2007			September 3, 2006
Revenue:
License revenue	$	52,593		$	51,076		$	159,704		$	151,738
Service and maintenance revenue:
Service and maintenance		80,608			67,620			226,233			199,112
Reimbursable expenses		1,913			1,707			5,348			5,380
Total service and maintenance revenue		82,521			69,327			231,581			204,492
Total revenue		135,114			120,403			391,285			356,230
Cost of revenue:
License		6,632			3,422			15,433			10,764
Service and maintenance		34,771			30,048			97,355			87,519
Total cost of revenue		41,403			33,470			112,788			98,283
Gross Profit		93,711			86,933			278,497			257,947
Operating expenses:
Research and development		23,843			20,957			66,855			64,908
Sales and marketing		48,755			40,121			138,137			118,184
General and administrative		13,664			10,908			38,529			31,658
Restructuring adjustment		(1,095	)		—			(1,095	)		—
Amortization of acquired intangible assets		4,058			2,364			9,000			7,091
Purchased in-process research and development		1,600			—			1,600			—
Total operating expenses		90,825			74,350			253,026			221,841
Income from operations		2,886			12,583			25,471			36,106
Interest income		2,842			5,319			14,948			14,675
Interest expense		(641	)		(702	)		(1,654	)		(2,002	)
Other income (expense), net		330			1,037			(1,237	)		1,145
Income before provision for income taxes and minority interest		5,417			18,237			37,528			49,924
Provision for income taxes		731			6,987			13,215			8,601
Minority interest, net of tax		52			—			70			—
Net income	$	4,634		$	11,250		$	24,243		$	41,323
Net income per share:
Basic	$	0.02		$	0.05		$	0.12		$	0.20
Diluted	$	0.02		$	0.05		$	0.12		$	0.19
Shares used to compute net income per share:
Basic		193,817			207,616			202,263			209,323
Diluted		200,128			214,498			209,439			218,150

TIBCO Software Inc.

Condensed Consolidated Statements of Cash Flows

(unaudited)

(in thousands)

	Nine Months Ended
	September 2, 2007			September 3, 2006
Cash flows from operating activities:
Net income	$	24,243		$	41,323
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment		12,115			11,625
Amortization of acquired intangible assets		15,497			11,083
Stock-based compensation		12,825			11,751
Purchased in-process research and development		1,600			—
Deferred income tax		(3,774	)		(10,816	)
Tax benefits related to employee stock benefit plans		7,280			9,675
Excess tax benefits from stock-based compensation		(8,652	)		(8,814	)
Minority interest, net of tax		70			—
Other non-cash adjustments, net		802			(849	)
Changes in assets and liabilities:
Accounts receivable		41,648			27,840
Due from related parties, net		—			1,243
Prepaid expenses and other assets		(6,852	)		(3,039	)
Accounts payable		(4,270	)		914
Accrued liabilities and excess facilities costs		(21,363	)		(8,230	)
Deferred revenue		740			10,126
Net cash provided by operating activities		71,909			93,832
Cash flows from investing activities:
Purchases of short-term investments		(140,928	)		(341,079	)
Proceeds from sales and maturities of short-term investments		430,811			214,514
Purchases of private equity investments		(59	)		(76	)
Proceeds from private equity investments		737			1,488
Cash used in acquisition, net of cash received		(181,336	)		—
Purchases of property and equipment		(10,020	)		(8,667	)
Restricted cash pledged as security		(275	)		(1,309	)
Net cash provided by (used for) investing activities		98,930			(135,129	)
Cash flows from financing activities:
Proceeds from issuance of common stock		21,515			14,627
Repurchase of the Company’s common stock		(226,932	)		(66,791	)
Excess tax benefits from stock-based compensation		8,652			8,814
Principal payments on long-term debt		(5,484	)		(1,340	)
Proceeds from minority investors		189			—
Net cash used for financing activities		(202,060	)		(44,690	)
Effect of foreign exchange rate changes on cash and cash equivalents		1,422			2,163
Net change in cash and cash equivalents		(29,799	)		(83,824	)
Cash and cash equivalents at beginning of period		138,912			208,756
Cash and cash equivalents at end of period	$	109,113		$	124,932

About Non-GAAP Financial Measures

TIBCO provides non-GAAP measures for operating income, net income and net income per share data as supplemental information regarding TIBCO’s business performance. TIBCO believes that these non-GAAP financial measures are useful to investors because they exclude non-operating charges. TIBCO’s management excludes these non-operating charges when it internally evaluates the performance of TIBCO’s business and makes operating decisions, including internal budgeting, performance measurement and the calculation of bonuses and discretionary compensation, because these measures provide a consistent method of comparison to historical periods. Moreover, management believes these non-GAAP measures reflect the essential revenue generation activities of TIBCO. Accordingly, management excludes gains and losses on equity investments, costs related to formal restructuring plans, stock-based compensation related to employee equity grants, the amortization of purchased intangible assets and charges for purchased in-process research and development, and the income tax effects of the foregoing, as well as adjustments for the impact of changes in the valuation allowance recorded against TIBCO’s deferred tax assets when making operational decisions.

TIBCO believes that providing the non-GAAP measures that management uses to its investors is useful to investors for a number of reasons. The non-GAAP measures provide a consistent basis for investors to understand TIBCO’s financial performance on a trended basis across historical periods. In addition, it allows investors to evaluate TIBCO’s performance using the same methodology and information as that used by TIBCO’s management.

Non-GAAP measures are subject to material limitations as these measures are not in accordance with, or a substitute for, GAAP and thus TIBCO’s definition may be different from similar non-GAAP measures used by other companies and/or analysts. However, TIBCO’s management compensates for these limitations by providing the relevant disclosure of the items excluded in the calculation of non-GAAP operating income, non-GAAP net income and non-GAAP net income per share. In addition, some items such as restructuring charges that are excluded from non-GAAP net income and non-GAAP earnings per share can have a material impact on cash flows and stock compensation charges can have a significant impact on earnings. Management compensates for these limitations by evaluating the non-GAAP measure together with the most directly comparable GAAP measure. TIBCO has historically provided non-GAAP measures to the investment community as a supplement to its GAAP results, to enable investors to evaluate TIBCO’s business performance in the way that management does.

The non-GAAP adjustments, and the basis for excluding them, are outlined below:

Stock-based Compensation

TIBCO incurs stock-based compensation expense under SFAS 123(R). TIBCO excludes this item for the purposes of calculating non-GAAP operating income, non-GAAP net income and non-GAAP net income per share because it is a non-cash expense that TIBCO believes is not reflective of its business performance. The nature of the stock-based compensation expense also makes it very difficult to estimate prospectively, since the expense will vary with changes in the stock price and market conditions at the time of new grants, varying valuation methodologies, subjective assumptions and different award types, making the comparison of current results with forward looking guidance potentially difficult for investors to interpret. The tax effects of stock-based compensation expenses may also vary significantly from period to period, without any change in underlying operational performance, thereby obscuring the underlying profitability of operations relative to prior periods (including prior periods following the adoption of SFAS 123(R)). The exclusion of stock-based compensation from the non-GAAP measures also allows a consistent comparison of TIBCO’s relative historical financial performance, since the method for accounting for stock-based compensation changed at the beginning of fiscal 2006 when TIBCO adopted SFAS 123(R). Finally, TIBCO believes that non-GAAP measures of profitability that exclude stock-based compensation are widely used by analysts and investors in the software industry.

Amortization of Intangible Assets and Purchased In-Process Research and Development (“IPR&D”)

TIBCO has incurred amortization of intangible assets and IPR&D, included in its GAAP financial statements, related to the Spotfire Holdings, Inc. acquisition and various other acquisitions TIBCO has made. Management excludes these items, for the purposes of calculating non-GAAP operating income, non-GAAP net income and non-GAAP net income per share. TIBCO believes that eliminating this expense from its non-GAAP measures is useful to investors, because the amortization of intangible assets and expensing of IPR&D can be inconsistent in amount and frequency and is significantly impacted by the timing and magnitude of TIBCO’s acquisition transactions, which also vary substantially in frequency from period to period.

Restructuring Activities

TIBCO has incurred restructuring expenses, included in its GAAP presentation of operating expense, primarily due to workforce related charges such as payments for severance and benefits and estimated costs of exiting and terminating facility lease commitments related to a formal restructuring plan. TIBCO excludes these items, for the purposes of calculating non-GAAP operating income, non-GAAP net income and non-GAAP net income per share, when it evaluates the continuing business performance of TIBCO. TIBCO believes that these items are not consistently recurring and do not necessarily reflect expected future operating expense, nor does TIBCO believe that they provide a meaningful evaluation of current versus past business results or the expense levels required to support TIBCO’s operating plan.

Investment Activities

TIBCO records gains or losses on its equity investments based on its pro-rata share of gains or the net losses of the investment. These gains or net losses are included in TIBCO’s GAAP presentation of operating income, net income and net income per share. TIBCO’s business is not to invest in third parties, and such investments do not constitute a material portion of TIBCO’s assets. The timing and magnitude of gains and losses are unpredictable, as they are inherently based on the performance of the third party subject to a particular investment. TIBCO excludes these items, for the purposes of calculating non-GAAP operating income, non-GAAP net income and non-GAAP net income per share, when it evaluates the continuing business performance of TIBCO. TIBCO believes that these items do not necessarily reflect expected future operating expense or income, nor does TIBCO believe that they provide a meaningful evaluation of current versus past business results or the expense levels required to support TIBCO’s operating plan.

The following table is a reconciliation of GAAP to non-GAAP measures for the third quarter and the first nine months of fiscal 2007 and fiscal 2006, respectively.

TIBCO Software Inc.

Reconciliation of GAAP to Non-GAAP Measures

(unaudited)

(in thousands, except net income per share)

	Three Months Ended											Nine Months Ended
	September 2, 2007						September 3, 2006					September 2, 2007						September 3, 2006
	Operating Income			Net Income			Operating Income		Net Income			Operating Income			Net Income			Operating Income		Net Income
GAAP	$	2,886		$	4,634		$	12,583	$	11,250		$	25,471		$	24,243		$	36,106	$	41,323
Amortization of intangible assets—cost of revenue		3,686			3,686			1,331		1,331			6,497			6,497			3,992		3,992
Amortization of intangible assets—operating expense		4,058			4,058			2,363		2,363			9,000			9,000			7,091		7,091
Stock-based compensation—cost of revenue		760			760			437		437			1,818			1,818			1,614		1,614
Stock-based compensation—R&D expense		1,022			1,022			742		742			2,815			2,815			2,760		2,760
Stock-based compensation—S&M expense		1,732			1,732			1,047		1,047			4,102			4,102			3,418		3,418
Stock-based compensation—G&A expense		1,614			1,614			1,261		1,261			4,090			4,090			3,959		3,959
Purchased in-process research and development		1,600			1,600			—		—			1,600			1,600			—		—
Restructuring adjustment		(1,095	)		(1,095	)		—		—			(1,095	)		(1,095	)		—		—
Realized gain on sales of private equity investment		—			(64	)		—		(738	)					(64	)				(738	)
Income tax adjustment for non-GAAP (1)					(5,825	)				(2,145	)					(9,987	)				(18,046	)
Non-GAAP	$	16,263		$	12,122		$	19,764	$	15,548		$	54,298		$	43,019		$	58,940	$	45,373
Diluted net income per share:
GAAP				$	0.02				$	0.05					$	0.12				$	0.19
Non-GAAP				$	0.06				$	0.07					$	0.21				$	0.21
Shares used to compute diluted net income per share					200,128					214,498						209,439					218,150

⁽¹⁾ The estimated non-GAAP effective tax rate was 35% for fiscal 2007 and 37% for fiscal 2006, and has been used to adjust the provision for income taxes for non-GAAP purposes.